1ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 5c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_H_ 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#define CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_H_ 73345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#pragma once 8c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 9c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <string> 10c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <list> 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 12ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen#include "base/memory/ref_counted.h" 13ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen#include "base/memory/scoped_ptr.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/extensions/extension_function_dispatcher.h" 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass ExtensionFunctionDispatcher; 173345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrickclass ListValue; 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass Profile; 19c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass QuotaLimitHeuristic; 203345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrickclass Value; 21c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#define EXTENSION_FUNCTION_VALIDATE(test) do { \ 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!(test)) { \ 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bad_message_ = true; \ 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return false; \ 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } \ 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } while (0) 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#define EXTENSION_FUNCTION_ERROR(error) do { \ 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch error_ = error; \ 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bad_message_ = true; \ 32c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return false; \ 33c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } while (0) 34c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 35c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#define DECLARE_EXTENSION_FUNCTION_NAME(name) \ 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch public: static const char* function_name() { return name; } 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 38c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Abstract base class for extension functions the ExtensionFunctionDispatcher 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// knows how to dispatch to. 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass ExtensionFunction : public base::RefCountedThreadSafe<ExtensionFunction> { 41c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch public: 42c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ExtensionFunction(); 43c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 44c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Specifies the name of the function. 45c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_name(const std::string& name) { name_ = name; } 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const std::string name() const { return name_; } 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set the profile which contains the extension that has originated this 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // function call. 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_profile(Profile* profile) { profile_ = profile; } 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch Profile* profile() const { return profile_; } 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set the id of this function call's extension. 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_extension_id(std::string extension_id) { 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch extension_id_ = extension_id; 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string extension_id() const { return extension_id_; } 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Specifies the raw arguments to the function, as a JSON value. 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void SetArgs(const ListValue* args) = 0; 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Retrieves the results of the function as a JSON-encoded string (may 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // be empty). 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual const std::string GetResult() = 0; 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Retrieves any error string from the function. 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual const std::string GetError() = 0; 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Returns a quota limit heuristic suitable for this function. 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // No quota limiting by default. 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void GetQuotaLimitHeuristics( 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::list<QuotaLimitHeuristic*>* heuristics) const {} 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_dispatcher_peer(ExtensionFunctionDispatcher::Peer* peer) { 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch peer_ = peer; 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ExtensionFunctionDispatcher* dispatcher() const { 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return peer_->dispatcher_; 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_request_id(int request_id) { request_id_ = request_id; } 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int request_id() { return request_id_; } 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_source_url(const GURL& source_url) { source_url_ = source_url; } 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const GURL& source_url() { return source_url_; } 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_has_callback(bool has_callback) { has_callback_ = has_callback; } 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool has_callback() { return has_callback_; } 89c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 90c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void set_include_incognito(bool include) { include_incognito_ = include; } 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool include_incognito() { return include_incognito_; } 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 933345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick void set_user_gesture(bool user_gesture) { user_gesture_ = user_gesture; } 943345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick bool user_gesture() const { return user_gesture_; } 953345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Execute the API. Clients should call set_raw_args() and 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // set_request_id() before calling this method. Derived classes should be 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // ready to return raw_result() and error() before returning from this 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // function. 100c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void Run() = 0; 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch protected: 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch friend class base::RefCountedThreadSafe<ExtensionFunction>; 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual ~ExtensionFunction(); 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Gets the extension that called this function. This can return NULL for 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // async functions, for example if the extension is unloaded while the 109c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // function is running. 110513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch const Extension* GetExtension(); 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Gets the "current" browser, if any. 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Many extension APIs operate relative to the current browser, which is the 115c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // browser the calling code is running inside of. For example, popups, tabs, 116c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // and infobars all have a containing browser, but background pages and 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // notification bubbles do not. 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is no containing window, the current browser defaults to the 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // foremost one. 121c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 122c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Incognito browsers are not considered unless the calling extension has 123c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // incognito access enabled. 124c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 125c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This method can return NULL if there is no matching browser, which can 126c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // happen if only incognito windows are open, or early in startup or shutdown 127c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // shutdown when there are no active windows. 128c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch Browser* GetCurrentBrowser(); 129c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 130c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The peer to the dispatcher that will service this extension function call. 131c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch scoped_refptr<ExtensionFunctionDispatcher::Peer> peer_; 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 133c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Id of this request, used to map the response back to the caller. 134c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int request_id_; 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 136c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The Profile of this function's extension. 137c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch Profile* profile_; 138c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 139c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The id of this function's extension. 140c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string extension_id_; 141c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 142c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The name of this function. 143c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string name_; 144c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 145c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The URL of the frame which is making this request 146c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GURL source_url_; 147c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 148c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // True if the js caller provides a callback function to receive the response 149c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // of this call. 150c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool has_callback_; 151c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1523345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // True if this callback should include information from incognito contexts 1533345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // even if our profile_ is non-incognito. Note that in the case of a "split" 1543345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // mode extension, this will always be false, and we will limit access to 1553345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // data from within the same profile_ (either incognito or not). 156c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool include_incognito_; 157c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1583345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // True if the call was made in response of user gesture. 1593345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick bool user_gesture_; 1603345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 161c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DISALLOW_COPY_AND_ASSIGN(ExtensionFunction); 162c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch}; 163c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 164c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Base class for an extension function that runs asynchronously *relative to 165c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// the browser's UI thread*. 166c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Note that once Run() returns, dispatcher() can be NULL, so be sure to 167c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// NULL-check. 168c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// TODO(aa) Remove this extra level of inheritance once the browser stops 169c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// parsing JSON (and instead uses custom serialization of Value objects). 170c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass AsyncExtensionFunction : public ExtensionFunction { 171c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch public: 172c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch AsyncExtensionFunction(); 173c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 174c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void SetArgs(const ListValue* args); 175c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual const std::string GetResult(); 176c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual const std::string GetError(); 177c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void Run(); 178c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 179c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Derived classes should implement this method to do their work and return 180c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // success/failure. 181c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual bool RunImpl() = 0; 182c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 183c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch protected: 184c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual ~AsyncExtensionFunction(); 185c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 186c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void SendResponse(bool success); 187c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 188c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Return true if the argument to this function at |index| was provided and 189c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is non-null. 190c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool HasOptionalArgument(size_t index); 191c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 192c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The arguments to the API. Only non-null if argument were specified. 193c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch scoped_ptr<ListValue> args_; 194c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 195c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The result of the API. This should be populated by the derived class before 196c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // SendResponse() is called. 197c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch scoped_ptr<Value> result_; 198c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 199c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Any detailed error from the API. This should be populated by the derived 200c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // class before Run() returns. 201c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string error_; 202c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 203c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Any class that gets a malformed message should set this to true before 204c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // returning. The calling renderer process will be killed. 205c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool bad_message_; 206c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 207c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DISALLOW_COPY_AND_ASSIGN(AsyncExtensionFunction); 208c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch}; 209c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 210c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// A SyncExtensionFunction is an ExtensionFunction that runs synchronously 211c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// *relative to the browser's UI thread*. Note that this has nothing to do with 212c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// running synchronously relative to the extension process. From the extension 213c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// process's point of view, the function is still asynchronous. 214c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// 215c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// This kind of function is convenient for implementing simple APIs that just 216c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// need to interact with things on the browser UI thread. 217c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass SyncExtensionFunction : public AsyncExtensionFunction { 218c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch public: 219c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch SyncExtensionFunction(); 220c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 221c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Derived classes should implement this method to do their work and return 222c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // success/failure. 223c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual bool RunImpl() = 0; 224c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 225c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual void Run(); 226c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 227c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch protected: 228c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch virtual ~SyncExtensionFunction(); 229c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 230c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch private: 231c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DISALLOW_COPY_AND_ASSIGN(SyncExtensionFunction); 232c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch}; 233c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 234c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_H_ 235