Introduce WebTaskRunner Patch 3/5

Source/modules/fetch/CompositeDataConsumerHandle.cpp

 // Copyright 2015 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 "config.h"
 #include "modules/fetch/CompositeDataConsumerHandle.h"
 
 #include "platform/Task.h"
 #include "platform/ThreadSafeFunctional.h"
 #include "public/platform/Platform.h"
@@ skipping 123 matching lines @@
                 // We are waiting for the two-phase read completion.
                 m_isUpdateWaitingForEndRead = true;
                 return;
             }
             // Unregister the old one, then register the new one.
             m_reader = nullptr;
             m_reader = m_handle->obtainReader(m_client);
             return;
         }
         ++m_token;
-        m_readerThread->postTask(FROM_HERE, new Task(threadSafeBind(&Context::updateReader, this, m_token)));
+        m_readerThread->taskRunner()->postTask(FROM_HERE, new Task(threadSafeBind(&Context::updateReader, this, m_token)));
     }
 
     OwnPtr<Reader> m_reader;
     OwnPtr<WebDataConsumerHandle> m_handle;
     // Note: Holding a WebThread raw pointer is not generally safe, but we can
     // do that in this case because:
     //  1. Destructing a ReaderImpl when the bound thread ends is a user's
     //     responsibility.
     //  2. |m_readerThread| will never be used after the associated reader is
     //     detached.
@@ skipping 52 matching lines @@
 }
 
 CompositeDataConsumerHandle::~CompositeDataConsumerHandle() { }
 
 WebDataConsumerHandle::Reader* CompositeDataConsumerHandle::obtainReaderInternal(Client* client)
 {
     return m_context->obtainReader(client).leakPtr();
 }
 
 } // namespace blink