1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "extensions/renderer/scripts_run_info.h"
6
7#include "base/metrics/histogram.h"
8#include "content/public/renderer/render_view.h"
9#include "extensions/common/extension_messages.h"
10#include "extensions/renderer/script_context.h"
11#include "third_party/WebKit/public/web/WebFrame.h"
12
13namespace extensions {
14
15ScriptsRunInfo::ScriptsRunInfo() : num_css(0u), num_js(0u) {
16}
17
18ScriptsRunInfo::~ScriptsRunInfo() {
19}
20
21void ScriptsRunInfo::LogRun(blink::WebFrame* frame,
22                            UserScript::RunLocation location) {
23  // Notify the browser if any extensions are now executing scripts.
24  if (!executing_scripts.empty()) {
25    content::RenderView* render_view =
26        content::RenderView::FromWebView(frame->view());
27    render_view->Send(new ExtensionHostMsg_ContentScriptsExecuting(
28        render_view->GetRoutingID(),
29        executing_scripts,
30        ScriptContext::GetDataSourceURLForFrame(frame)));
31  }
32
33  switch (location) {
34    case UserScript::DOCUMENT_START:
35      UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_CssCount", num_css);
36      UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_ScriptCount", num_js);
37      if (num_css || num_js)
38        UMA_HISTOGRAM_TIMES("Extensions.InjectStart_Time", timer.Elapsed());
39      break;
40    case UserScript::DOCUMENT_END:
41      UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_ScriptCount", num_js);
42      if (num_js)
43        UMA_HISTOGRAM_TIMES("Extensions.InjectEnd_Time", timer.Elapsed());
44      break;
45    case UserScript::DOCUMENT_IDLE:
46      UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_ScriptCount", num_js);
47      if (num_js)
48        UMA_HISTOGRAM_TIMES("Extensions.InjectIdle_Time", timer.Elapsed());
49      break;
50    case UserScript::RUN_DEFERRED:
51    case UserScript::BROWSER_DRIVEN:
52      // TODO(rdevlin.cronin): Add histograms.
53      break;
54    case UserScript::UNDEFINED:
55    case UserScript::RUN_LOCATION_LAST:
56      NOTREACHED();
57  }
58}
59
60}  // namespace extensions
61