[Reland] Per WebViewScheduler virtual time

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 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 4444 matching lines @@
     if (!content.isValid())
         return false;
 
     // This code is called directly after hit test code, with no user code running in between,
     // thus it is assumed that the frame pointer is non-null.
     bool isMainFrame = node ? node->document().frame()->isMainFrame() : true;
     m_client->scheduleContentIntent(content.intent(), isMainFrame);
     return true;
 }
 
+WebViewScheduler* WebViewImpl::scheduler() const
+{
+    return m_scheduler.get();
+}
+
 void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
                                      bool isInitialState) {
     ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden || visibilityState == WebPageVisibilityStatePrerender);
 
     if (page())
         m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
 
     bool visible = visibilityState == WebPageVisibilityStateVisible;
     if (m_layerTreeView)
         m_layerTreeView->setVisible(visible);
@@ skipping 100 matching lines @@
 {
     // TODO(oshima): Investigate if this should return the ScreenInfo's scale factor rather than
     // page's scale factor, which can be 1 in use-zoom-for-dsf mode.
     if (!page())
         return 1;
 
     return page()->deviceScaleFactor();
 }
 
 } // namespace blink