Use Local instead of Handle in src/content/*

content/shell/renderer/layout_test/gc_controller.cc

Index: content/shell/renderer/layout_test/gc_controller.cc
diff --git a/content/shell/renderer/layout_test/gc_controller.cc b/content/shell/renderer/layout_test/gc_controller.cc
index 2bd45a878db370a93f30d836942761e67ae10d86..9741e2b3a2fac60367b94488579b2a6aa850c44a 100644
--- a/content/shell/renderer/layout_test/gc_controller.cc
+++ b/content/shell/renderer/layout_test/gc_controller.cc
@@ -19,7 +19,7 @@ gin::WrapperInfo GCController::kWrapperInfo = {gin::kEmbedderNativeGin};
 void GCController::Install(blink::WebFrame* frame) {
   v8::Isolate* isolate = blink::mainThreadIsolate();
   v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
+  v8::Local<v8::Context> context = frame->mainWorldScriptContext();
   if (context.IsEmpty())
     return;
 
@@ -29,7 +29,7 @@ void GCController::Install(blink::WebFrame* frame) {
       gin::CreateHandle(isolate, new GCController());
   if (controller.IsEmpty())
     return;
-  v8::Handle<v8::Object> global = context->Global();
+  v8::Local<v8::Object> global = context->Global();
   global->Set(gin::StringToV8(isolate, "GCController"), controller.ToV8());
 }