[DevTools] Switch from DIP to CSS pixels in device mode.

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 361 matching lines @@
     // Overlay should not consume events.
     m_overlay->handleKeyboardEvent(event);
     return false;
 }
 
 void InspectorController::requestPageScaleFactor(float scale, const IntPoint& origin)
 {
     m_inspectorClient->requestPageScaleFactor(scale, origin);
 }
 
+void InspectorController::deviceOrPageScaleFactorChanged()
+{
+    m_pageAgent->deviceOrPageScaleFactorChanged();
+}
+
 bool InspectorController::deviceEmulationEnabled()
 {
     if (InspectorPageAgent* pageAgent = m_instrumentingAgents->inspectorPageAgent())
         return pageAgent->deviceMetricsOverrideEnabled();
     return false;
 }
 
 void InspectorController::resume()
 {
     if (InspectorDebuggerAgent* debuggerAgent = m_instrumentingAgents->inspectorDebuggerAgent()) {
@@ skipping 80 matching lines @@
         m_layerTreeAgent->willAddPageOverlay(layer);
 }
 
 void InspectorController::didRemovePageOverlay(const GraphicsLayer* layer)
 {
     if (m_layerTreeAgent)
         m_layerTreeAgent->didRemovePageOverlay(layer);
 }
 
 } // namespace WebCore