Merge the Sky Engine changes from the SkyDart branch

sky/engine/web/FrameLoaderClientImpl.h

Index: sky/engine/web/FrameLoaderClientImpl.h
diff --git a/sky/engine/web/FrameLoaderClientImpl.h b/sky/engine/web/FrameLoaderClientImpl.h
index fd20cb2d2db0a2790c7d020c0f2fa96eb112208b..6f856510de4686360f99f4451635a327721d7585 100644
--- a/sky/engine/web/FrameLoaderClientImpl.h
+++ b/sky/engine/web/FrameLoaderClientImpl.h
@@ -52,9 +52,6 @@ public:
 
     virtual void documentElementAvailable() override;
 
-    virtual void didCreateScriptContext(v8::Handle<v8::Context>) override;
-    virtual void willReleaseScriptContext(v8::Handle<v8::Context>) override;
-
     virtual void detachedFromParent() override;
     virtual void dispatchWillSendRequest(Document*, unsigned long identifier, ResourceRequest&, const ResourceResponse& redirectResponse) override;
     virtual void dispatchDidReceiveResponse(Document*, unsigned long identifier, const ResourceResponse&) override;
@@ -80,6 +77,7 @@ public:
     virtual void didLoseWebGLContext(int arbRobustnessContextLostReason) override;
 
     virtual void dispatchDidChangeManifest() override;
+    virtual void didCreateIsolate(Dart_Isolate isolate) override;
 
 private:
     virtual bool isFrameLoaderClientImpl() const override { return true; }