Implement the Blink part of the Device Motion API.

Tools/DumpRenderTree/chromium/TestRunner/src/TestInterfaces.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 44 matching lines @@
     , m_textInputController(new TextInputController())
     , m_testRunner(new TestRunner(this))
     , m_webView(0)
     , m_delegate(0)
 {
     WebKit::setLayoutTestMode(true);
 
     WebRuntimeFeatures::enableStableFeatures(true);
     WebRuntimeFeatures::enableExperimentalFeatures(true);
     WebRuntimeFeatures::enableTestOnlyFeatures(true);
+    WebRuntimeFeatures::enableDeviceMotion(true);

[abarth-chromium, 2013/05/13 18:39:56]

In RuntimeEnabledFeatures.in, you should mark device motion as enabled for
testing rather than putting this code here.

Would you also be willing to add a comment here explaining that we shouldn't put
feature-specific enable flags here and that instead folks should set the
"status" attribute in RuntimeEnabledFetures.in appropriately?

[timvolodine, 2013/05/14 18:07:46]

Done.

 
     resetAll();
 }
 
 TestInterfaces::~TestInterfaces()
 {
     m_accessibilityController->setWebView(0);
     m_eventSender->setWebView(0);
     // m_gamepadController doesn't depend on WebView.
     m_textInputController->setWebView(0);
@@ skipping 125 matching lines @@
         m_themeEngine.reset(new WebTestThemeEngineWin());
     return m_themeEngine.get();
 #elif defined(__APPLE__)
     if (!m_themeEngine.get())
         m_themeEngine.reset(new WebTestThemeEngineMac());
     return m_themeEngine.get();
 #endif
 }
 
 }