[bindings] Use Local<> in lieu of Handle<> for the callback_interface.h/cpp in templates.

Source/bindings/templates/callback_interface.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
 
 #include "config.h"
 {% filter conditional(conditional_string) %}
 #include "{{v8_class}}.h"
 
 {% for filename in cpp_includes %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
 
-{{v8_class}}::{{v8_class}}(v8::Handle<v8::Function> callback, ScriptState* scriptState)
+{{v8_class}}::{{v8_class}}(v8::Local<v8::Function> callback, ScriptState* scriptState)
     : ActiveDOMCallback(scriptState->executionContext())
     , m_scriptState(scriptState)
 {
     m_callback.set(scriptState->isolate(), callback);
 }
 
 {{v8_class}}::~{{v8_class}}()
 {
 }
 
@@ skipping 39 matching lines @@
     ScriptController::callFunction(m_scriptState->executionContext(), m_callback.newLocal(m_scriptState->isolate()), {{this_handle_parameter}}{{method.arguments | length}}, argv, m_scriptState->isolate());
     return !exceptionCatcher.HasCaught();
     {% else %}{# void #}
     ScriptController::callFunction(m_scriptState->executionContext(), m_callback.newLocal(m_scriptState->isolate()), {{this_handle_parameter}}{{method.arguments | length}}, argv, m_scriptState->isolate());
     {% endif %}
 }
 
 {% endfor %}
 } // namespace blink
 {% endfilter %}