Make use of v8::Local alias in Source/web*

Source/web/FrameLoaderClientImpl.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 41 matching lines @@
 
     // FrameLoaderClient ----------------------------------------------
 
     virtual void didCreateNewDocument() override;
     // Notifies the WebView delegate that the JS window object has been cleared,
     // giving it a chance to bind native objects to the window before script
     // parsing begins.
     virtual void dispatchDidClearWindowObjectInMainWorld() override;
     virtual void documentElementAvailable() override;
 
-    virtual void didCreateScriptContext(v8::Handle<v8::Context>, int extensionGroup, int worldId) override;
-    virtual void willReleaseScriptContext(v8::Handle<v8::Context>, int worldId) override;
+    virtual void didCreateScriptContext(v8::Local<v8::Context>, int extensionGroup, int worldId) override;
+    virtual void willReleaseScriptContext(v8::Local<v8::Context>, int worldId) override;
 
     // Returns true if we should allow the given V8 extension to be added to
     // the script context at the currently loading page and given extension group.
     virtual bool allowScriptExtension(const String& extensionName, int extensionGroup, int worldId) override;
 
     virtual bool hasWebView() const override;
     virtual Frame* opener() const override;
     virtual void setOpener(Frame*) override;
     virtual Frame* parent() const override;
     virtual Frame* top() const override;
@@ skipping 113 matching lines @@
     // The WebFrame that owns this object and manages its lifetime. Therefore,
     // the web frame object is guaranteed to exist.
     WebLocalFrameImpl* m_webFrame;
 };
 
 DEFINE_TYPE_CASTS(FrameLoaderClientImpl, FrameLoaderClient, client, client->isFrameLoaderClientImpl(), client.isFrameLoaderClientImpl());
 
 } // namespace blink
 
 #endif