Pepper and WebKit API change to support a plugin knowing if a scrollbar is an overlay one.

third_party/WebKit/Source/WebKit/chromium/src/WebViewImpl.cpp

 /*
  * Copyright (C) 2010 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 982 matching lines @@
     // deleted.
     m_client = 0;
 
     deref();  // Balances ref() acquired in WebView::create
 }
 
 void WebViewImpl::willStartLiveResize()
 {
     if (mainFrameImpl() && mainFrameImpl()->frameView())
         mainFrameImpl()->frameView()->willStartLiveResize();
+
+    Frame* frame = mainFrameImpl()->frame();
+    WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
+    if (pluginContainer)
+        pluginContainer->plugin()->willStartLiveResize();
 }
 
 void WebViewImpl::resize(const WebSize& newSize)
 {
     if (m_size == newSize)
         return;
     m_size = newSize;
 
     if (mainFrameImpl()->frameView()) {
         mainFrameImpl()->frameView()->resize(m_size.width, m_size.height);
         mainFrameImpl()->frame()->eventHandler()->sendResizeEvent();
     }
 
     if (m_client) {
         if (isAcceleratedCompositingActive()) {
 #if USE(ACCELERATED_COMPOSITING)
             updateLayerRendererViewport();
 #endif
         } else {
             WebRect damagedRect(0, 0, m_size.width, m_size.height);
             m_client->didInvalidateRect(damagedRect);
         }
     }
 }
 
 void WebViewImpl::willEndLiveResize()
 {
     if (mainFrameImpl() && mainFrameImpl()->frameView())
         mainFrameImpl()->frameView()->willEndLiveResize();
+
+    Frame* frame = mainFrameImpl()->frame();
+    WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
+    if (pluginContainer)
+        pluginContainer->plugin()->willEndLiveResize();
 }
 
 void WebViewImpl::animate(double frameBeginTime)
 {
 #if ENABLE(REQUEST_ANIMATION_FRAME)
     TRACE_EVENT("WebViewImpl::animate", this, 0);
     // FIXME: remove this zero-check once render_widget has been modified to
     // pass in a frameBeginTime.
     if (!frameBeginTime)
         frameBeginTime = currentTime();
@@ skipping 1663 matching lines @@
 
 #if ENABLE(GESTURE_RECOGNIZER)
 void WebViewImpl::resetGestureRecognizer()
 {
     m_gestureRecognizer->reset();
 }
 #endif
 
 
 } // namespace WebKit