[ServiceWorker] Add contentType argument to BodyStreamBuffer::readAllAndCreateBlobHandle.

Source/modules/serviceworkers/BodyStreamBuffer.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 "config.h"
 #include "modules/serviceworkers/BodyStreamBuffer.h"
 
 #include "core/dom/DOMArrayBuffer.h"
 
 namespace blink {
 
 namespace {
 
 class BlobCreator final : public BodyStreamBuffer::Observer {
 public:
-    BlobCreator(BodyStreamBuffer* buffer, BodyStreamBuffer::BlobHandleCreatorClient* client)
+    BlobCreator(BodyStreamBuffer* buffer, const String& contentType, BodyStreamBuffer::BlobHandleCreatorClient* client)
         : m_buffer(buffer)
         , m_client(client)
         , m_blobData(BlobData::create())
     {
+        m_blobData->setContentType(contentType);
     }
     ~BlobCreator() override { }
     void trace(Visitor* visitor) override
     {
         visitor->trace(m_buffer);
         visitor->trace(m_client);
         BodyStreamBuffer::Observer::trace(visitor);
     }
     void onWrite() override
     {
@@ skipping 74 matching lines @@
     ASSERT(!m_exception);
     m_exception = exception;
     if (m_observer)
         m_observer->onError();
 }
 
 bool BodyStreamBuffer::readAllAndCreateBlobHandle(BlobHandleCreatorClient* client)
 {
     if (m_observer)
         return false;
-    BlobCreator* blobCreator = new BlobCreator(this, client);
+    BlobCreator* blobCreator = new BlobCreator(this, m_contentType, client);
     blobCreator->start();
     return true;
 }
 
 bool BodyStreamBuffer::registerObserver(Observer* observer)
 {
     if (m_observer)
         return false;
     ASSERT(observer);
     m_observer = observer;
     return true;
 }
 
 void BodyStreamBuffer::unregisterObserver()
 {
     m_observer.clear();
 }
 
 void BodyStreamBuffer::trace(Visitor* visitor)
 {
     visitor->trace(m_exception);
     visitor->trace(m_observer);
 }
 
-BodyStreamBuffer::BodyStreamBuffer()
-    : m_isClosed(false)
+BodyStreamBuffer::BodyStreamBuffer(const String& contentType)
+    : m_contentType(contentType)
+    , m_isClosed(false)
 {
 }
 
 } // namespace blink