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

Source/web/WebPluginContainerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. 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 444 matching lines @@
     if (!frame)
         return v8::Local<v8::Object>();
 
     if (!frame->script().canExecuteScripts(NotAboutToExecuteScript))
         return v8::Local<v8::Object>();
 
     ScriptState* scriptState = ScriptState::forMainWorld(frame);
     if (!scriptState->contextIsValid())
         return v8::Local<v8::Object>();
 
-    v8::Handle<v8::Value> v8value = toV8(m_element.get(), scriptState->context()->Global(), scriptState->isolate());
+    v8::Local<v8::Value> v8value = toV8(m_element.get(), scriptState->context()->Global(), scriptState->isolate());
     ASSERT(v8value->IsObject());
 
-    return v8::Handle<v8::Object>::Cast(v8value);
+    return v8::Local<v8::Object>::Cast(v8value);
 }
 
 WebString WebPluginContainerImpl::executeScriptURL(const WebURL& url, bool popupsAllowed)
 {
     LocalFrame* frame = m_element->document().frame();
     if (!frame)
         return WebString();
 
     const KURL& kurl = url;
     ASSERT(kurl.protocolIs("javascript"));
 
     String script = decodeURLEscapeSequences(
         kurl.string().substring(strlen("javascript:")));
 
     UserGestureIndicator gestureIndicator(popupsAllowed ? DefinitelyProcessingNewUserGesture : PossiblyProcessingUserGesture);
     v8::HandleScope handleScope(toIsolate(frame));
     v8::Local<v8::Value> result = frame->script().executeScriptInMainWorldAndReturnValue(ScriptSourceCode(script));
 
     // Failure is reported as a null string.
     if (result.IsEmpty() || !result->IsString())
         return WebString();
-    return toCoreString(v8::Handle<v8::String>::Cast(result));
+    return toCoreString(v8::Local<v8::String>::Cast(result));
 }
 
 void WebPluginContainerImpl::loadFrameRequest(const WebURLRequest& request, const WebString& target, bool notifyNeeded, void* notifyData)
 {
     LocalFrame* frame = m_element->document().frame();
     if (!frame || !frame->loader().documentLoader())
         return;  // FIXME: send a notification in this case?
 
     if (notifyNeeded) {
         // FIXME: This is a bit of hack to allow us to observe completion of
@@ skipping 510 matching lines @@
     for (size_t i = 0; i < cutOutRects.size(); i++)
         cutOutRects[i].move(-frameRect().x(), -frameRect().y());
 }
 
 bool WebPluginContainerImpl::pluginShouldPersist() const
 {
     return m_webPlugin->shouldPersist();
 }
 
 } // namespace blink