scheduler: Implement WebFrameScheduler and WebPageScheduler

third_party/WebKit/Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 32 matching lines @@
 #include "core/page/ContextMenuController.h"
 #include "core/page/DragController.h"
 #include "core/page/FocusController.h"
 #include "core/page/PointerLockController.h"
 #include "core/page/ValidationMessageClient.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/paint/DeprecatedPaintLayer.h"
 #include "platform/MemoryPurgeController.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/plugins/PluginData.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebFrameHostScheduler.h"
 
 namespace blink {
 
 // static
 HashSet<Page*>& Page::allPages()
 {
     DEFINE_STATIC_LOCAL(HashSet<Page*>, allPages, ());
     return allPages;
 }
 
@@ skipping 317 matching lines @@
 {
     return m_timerAlignmentInterval;
 }
 
 void Page::setVisibilityState(PageVisibilityState visibilityState, bool isInitialState)
 {
     if (m_visibilityState == visibilityState)
         return;
     m_visibilityState = visibilityState;
 
-    if (visibilityState == PageVisibilityStateVisible)
+    // TODO(alexclarke): Move throttling of timers to chromium.
+    if (visibilityState == PageVisibilityStateVisible) {
+        m_frameHost->frameHostScheduler()->setPageInBackground(false);
         setTimerAlignmentInterval(DOMTimer::visiblePageAlignmentInterval());
-    else
+    } else {
+        m_frameHost->frameHostScheduler()->setPageInBackground(true);
         setTimerAlignmentInterval(DOMTimer::hiddenPageAlignmentInterval());
+    }
 
     if (!isInitialState)
         notifyPageVisibilityChanged();
 
     if (!isInitialState && m_mainFrame && m_mainFrame->isLocalFrame())
         deprecatedLocalMainFrame()->didChangeVisibilityState();
 }
 
 PageVisibilityState Page::visibilityState() const
 {
@@ skipping 198 matching lines @@
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 template class CORE_TEMPLATE_EXPORT WillBeHeapSupplement<Page>;
 
 } // namespace blink