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1 # Copyright 2016 The Chromium Authors. All rights reserved. | 1 # Copyright 2016 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 from page_sets.system_health import system_health_story | 5 from page_sets.system_health import system_health_story |
6 | 6 |
7 | 7 |
8 class BlankAboutBlankStory(system_health_story.SystemHealthStory): | 8 class BlankAboutBlankStory(system_health_story.SystemHealthStory): |
9 """Story that loads the about:blank page.""" | 9 """Story that loads the about:blank page.""" |
10 | 10 |
11 NAME = 'blank:about:blank' | 11 NAME = 'blank:about:blank' |
12 URL = 'about:blank' | 12 URL = 'about:blank' |
13 | 13 |
14 def _DidLoadDocument(self, action_runner): | 14 def _DidLoadDocument(self, action_runner): |
15 # Request a RAF and wait for it to be processed to ensure that the metric | 15 # Request a RAF and wait for it to be processed to ensure that the metric |
16 # Startup.FirstWebContents.NonEmptyPaint2 is recorded. | 16 # Startup.FirstWebContents.NonEmptyPaint2 is recorded. |
17 action_runner.ExecuteJavaScript2( | 17 action_runner.ExecuteJavaScript( |
18 """ | 18 """ |
19 window.__hasRunRAF = false; | 19 window.__hasRunRAF = false; |
20 requestAnimationFrame(function() { | 20 requestAnimationFrame(function() { |
21 window.__hasRunRAF = true; | 21 window.__hasRunRAF = true; |
22 }); | 22 }); |
23 """ | 23 """ |
24 ) | 24 ) |
25 action_runner.WaitForJavaScriptCondition2("window.__hasRunRAF") | 25 action_runner.WaitForJavaScriptCondition("window.__hasRunRAF") |
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