15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved.
25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be
35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file.
45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)
55d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Update the declarative rules on install or upgrade.
65d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)chrome.runtime.onInstalled.addListener(function() {
75d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)  chrome.declarativeContent.onPageChanged.removeRules(undefined, function() {
85d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)    chrome.declarativeContent.onPageChanged.addRules([{
95d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)      conditions: [
105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)        // When a page contains a <video> tag...
115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)        new chrome.declarativeContent.PageStateMatcher({
125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)          css: ["video"]
135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)        })
145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)      ],
155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)      // ... show the page action.
165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)      actions: [new chrome.declarativeContent.ShowPageAction() ]
175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)    }]);
185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)  });
195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)});
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