DevTools: defer styles delta calculation to until the end of the task.

Source/core/inspector/InspectorController.cpp

 /*
  * Copyright (C) 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 402 matching lines @@
 void InspectorController::willProcessTask()
 {
     if (InspectorTimelineAgent* timelineAgent = m_instrumentingAgents->inspectorTimelineAgent())
         timelineAgent->willProcessTask();
     if (InspectorProfilerAgent* profilerAgent = m_instrumentingAgents->inspectorProfilerAgent())
         profilerAgent->willProcessTask();
 }
 
 void InspectorController::didProcessTask()
 {
+    if (InspectorCSSAgent* cssAgent = m_instrumentingAgents->inspectorCSSAgent())
+        cssAgent->didProcessTask();
     if (InspectorTimelineAgent* timelineAgent = m_instrumentingAgents->inspectorTimelineAgent())
         timelineAgent->didProcessTask();
     if (InspectorProfilerAgent* profilerAgent = m_instrumentingAgents->inspectorProfilerAgent())
         profilerAgent->didProcessTask();
     if (InspectorDOMDebuggerAgent* domDebuggerAgent = m_instrumentingAgents->inspectorDOMDebuggerAgent())
         domDebuggerAgent->didProcessTask();
 }
 
 void InspectorController::didCommitLoadForMainFrame()
 {
@@ skipping 46 matching lines @@
         m_layerTreeAgent->willAddPageOverlay(layer);
 }
 
 void InspectorController::didRemovePageOverlay(const GraphicsLayer* layer)
 {
     if (m_layerTreeAgent)
         m_layerTreeAgent->didRemovePageOverlay(layer);
 }
 
 } // namespace WebCore