Replace Handle<> with Local in remaining gin/*

gin/per_context_data_unittest.cc

 // 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.
 
 #include "gin/per_context_data.h"
 
 #include "gin/public/context_holder.h"
 #include "gin/public/isolate_holder.h"
 #include "gin/test/v8_test.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 
 typedef V8Test PerContextDataTest;
 
 // Verifies PerContextData can be looked up by context and that it is not
 // available once ContextHolder is destroyed.
 TEST_F(PerContextDataTest, LookupAndDestruction) {
   v8::Isolate::Scope isolate_scope(instance_->isolate());
   v8::HandleScope handle_scope(instance_->isolate());
-  v8::Handle<v8::Context> context = v8::Context::New(
-      instance_->isolate(), NULL, v8::Handle<v8::ObjectTemplate>());
+  v8::Local<v8::Context> context = v8::Context::New(
+      instance_->isolate(), NULL, v8::Local<v8::ObjectTemplate>());
   {
     ContextHolder context_holder(instance_->isolate());
     context_holder.SetContext(context);
     PerContextData* per_context_data = PerContextData::From(context);
     EXPECT_TRUE(per_context_data != NULL);
     EXPECT_EQ(&context_holder, per_context_data->context_holder());
   }
   PerContextData* per_context_data = PerContextData::From(context);
   EXPECT_TRUE(per_context_data == NULL);
 }
 
 }  // namespace gin