Make Resource MemoryCoordinatorClient.

third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.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 "bindings/core/v8/ScriptStreamer.h"
 
 #include "bindings/core/v8/ScriptStreamerThread.h"
 #include "bindings/core/v8/V8ScriptRunner.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/PendingScript.h"
+#include "core/fetch/CachedMetadata.h"
 #include "core/fetch/ScriptResource.h"
 #include "core/frame/Settings.h"
 #include "core/html/parser/TextResourceDecoder.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/Histogram.h"
 #include "platform/SharedBuffer.h"
 #include "platform/TraceEvent.h"
 #include "public/platform/WebScheduler.h"
 #include "wtf/Deque.h"
 #include "wtf/PtrUtil.h"
@@ skipping 259 matching lines @@
         // BOM can only occur at the beginning of the data.
         ASSERT(lengthOfBOM == 0 || m_queueTailPosition == 0);
 
         if (!streamer->resource()->response().cacheStorageCacheName().isNull()) {
             streamer->suppressStreaming();
             cancel();
             return;
         }
 
         CachedMetadataHandler* cacheHandler = streamer->resource()->cacheHandler();
-        if (cacheHandler && cacheHandler->cachedMetadata(V8ScriptRunner::tagForCodeCache(cacheHandler))) {
+        RefPtr<CachedMetadata> codeCache(cacheHandler ? cacheHandler->cachedMetadata(V8ScriptRunner::tagForCodeCache(cacheHandler)) : nullptr);
+        if (codeCache.get())  {

[hiroshige, 2016/08/25 12:48:11]

We can remove .get() here.

             // The resource has a code cache, so it's unnecessary to stream and
             // parse the code. Cancel the streaming and resume the non-streaming
             // code path.
             streamer->suppressStreaming();
             cancel();
             return;
         }
 
         if (!m_resourceBuffer) {
             // We don't have a buffer yet. Try to get it from the resource.
@@ skipping 384 matching lines @@
 
     // The Resource might go out of scope if the script is no longer
     // needed. This makes PendingScript notify the ScriptStreamer when it is
     // destroyed.
     script->setStreamer(ScriptStreamer::create(script, scriptType, scriptState, compileOption, loadingTaskRunner));
 
     return true;
 }
 
 } // namespace blink