[Fetch API] Remove HandleScope to protect local handles

third_party/WebKit/Source/modules/fetch/Response.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.
 
 #include "modules/fetch/Response.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
@@ skipping 415 matching lines @@
 
 void Response::installBody()
 {
     if (!internalBodyBuffer())
         return;
     refreshBody(internalBodyBuffer()->scriptState());
 }
 
 void Response::refreshBody(ScriptState* scriptState)
 {
-    ScriptState::Scope scope(scriptState);
     v8::Local<v8::Value> bodyBuffer = toV8(internalBodyBuffer(), scriptState);
     v8::Local<v8::Value> response = toV8(this, scriptState);
     if (response.IsEmpty()) {
         // |toV8| can return an empty handle when the worker is terminating.
         // We don't want the renderer to crash in such cases.
         // TODO(yhirano): Delete this block after the graceful shutdown
         // mechanism is introduced.
         return;
     }
     DCHECK(response->IsObject());
     V8HiddenValue::setHiddenValue(scriptState, response.As<v8::Object>(), V8HiddenValue::internalBodyBuffer(scriptState->isolate()), bodyBuffer);
 }
 
 DEFINE_TRACE(Response)
 {
     Body::trace(visitor);
     visitor->trace(m_response);
     visitor->trace(m_headers);
 }
 
 } // namespace blink