[DevTools] Add power profiler and power overview in timeline panel.

Source/core/inspector/InspectorFrontendHost.h

Index: Source/core/inspector/InspectorFrontendHost.h
diff --git a/Source/core/inspector/InspectorFrontendHost.h b/Source/core/inspector/InspectorFrontendHost.h
old mode 100644
new mode 100755
index 1bccdca379f5fd83a22ea435bf6ae3ad6aecb0d0..d3aa60bb5c9c15b88eb450247ccbc60fdd9a4cb0
--- a/Source/core/inspector/InspectorFrontendHost.h
+++ b/Source/core/inspector/InspectorFrontendHost.h
@@ -73,6 +73,11 @@ public:
 
     bool isUnderTest();
 
+    void checkPowerProfileSupportedStatus();
+    void startPowerProfile();
+    void stopPowerProfile();
+    void setPowerProfileResolution(unsigned);
+
 private:
     friend class FrontendMenuProvider;
     InspectorFrontendHost(InspectorFrontendClient* client, Page* frontendPage);