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

Source/web/InspectorFrontendClientImpl.h

Index: Source/web/InspectorFrontendClientImpl.h
diff --git a/Source/web/InspectorFrontendClientImpl.h b/Source/web/InspectorFrontendClientImpl.h
old mode 100644
new mode 100755
index 3fbf6cb58b1b13fa8a6328cb27932be913311bf1..fad5173ed68de99bee64c2ac77de2847997facd3
--- a/Source/web/InspectorFrontendClientImpl.h
+++ b/Source/web/InspectorFrontendClientImpl.h
@@ -61,6 +61,11 @@ public:
 
     virtual bool isUnderTest();
 
+    virtual void checkPowerProfileSupportedStatus();
+    virtual void startPowerProfile();
+    virtual void stopPowerProfile();
+    virtual void setPowerProfileResolution(unsigned);
+
 private:
     WebCore::Page* m_frontendPage;
     WebDevToolsFrontendClient* m_client;