Timeline: show white overlay till page being reloaded paints

third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp

 /*
  * Copyright (C) 2010-2011 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 503 matching lines @@
     if (m_layerTreeAgent)
         m_layerTreeAgent->willAddPageOverlay(layer);
 }
 
 void WebDevToolsAgentImpl::didRemovePageOverlay(const GraphicsLayer* layer)
 {
     if (m_layerTreeAgent)
         m_layerTreeAgent->didRemovePageOverlay(layer);
 }
 
+void WebDevToolsAgentImpl::rootLayerCleared()
+{
+    if (m_overlay)
+        m_overlay->maybeClearReloadingBanner();
+}
+
 void WebDevToolsAgentImpl::layerTreeViewChanged(WebLayerTreeView* layerTreeView)
 {
     m_layerTreeId = layerTreeView ? layerTreeView->layerTreeId() : 0;
     if (m_tracingAgent)
         m_tracingAgent->setLayerTreeId(m_layerTreeId);
 }
 
-void WebDevToolsAgentImpl::enableTracing(const String& categoryFilter)
+void WebDevToolsAgentImpl::enableTracing(const String& categoryFilter, const String& reloadingBannerMessage)
 {
     if (m_client)
         m_client->enableTracing(categoryFilter);
+    if (!reloadingBannerMessage.isNull() && m_overlay)
+        m_overlay->setReloadingBanner(reloadingBannerMessage);
 }
 
 void WebDevToolsAgentImpl::disableTracing()
 {
     if (m_client)
         m_client->disableTracing();
 }
 
 void WebDevToolsAgentImpl::setCPUThrottlingRate(double rate)
 {
@@ skipping 124 matching lines @@
 bool WebDevToolsAgent::shouldInterruptForMethod(const WebString& method)
 {
     return method == "Debugger.pause"
         || method == "Debugger.setBreakpoint"
         || method == "Debugger.setBreakpointByUrl"
         || method == "Debugger.removeBreakpoint"
         || method == "Debugger.setBreakpointsActive";
 }
 
 } // namespace blink