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

Source/modules/serviceworkers/BodyStreamBuffer.h

 // 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.
 
 #ifndef BodyStreamBuffer_h
 #define BodyStreamBuffer_h
 
 #include "core/dom/DOMException.h"
 #include "platform/blob/BlobData.h"
 #include "platform/heap/Heap.h"
 #include "wtf/Deque.h"
 #include "wtf/RefPtr.h"
+#include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class DOMArrayBuffer;
 
 class BodyStreamBuffer final : public GarbageCollectedFinalized<BodyStreamBuffer> {
 public:
     class Observer : public GarbageCollectedFinalized<Observer> {
     public:
         virtual ~Observer() { }
@@ skipping 19 matching lines @@
 
     // Can't call after close() or error() was called.
     void write(PassRefPtr<DOMArrayBuffer>);
     // Can't call after close() or error() was called.
     void close();
     // Can't call after close() or error() was called.
     void error(PassRefPtrWillBeRawPtr<DOMException>);
 
     // This function registers an observer so it fails and returns false when an
     // observer was already registered
-    bool readAllAndCreateBlobHandle(BlobHandleCreatorClient*);
+    bool readAllAndCreateBlobHandle(const String& contentType, BlobHandleCreatorClient*);
 
     // When an observer was registered this function fails and returns false.
     bool registerObserver(Observer*);
     void unregisterObserver();
     bool isObserverRegistered() const { return m_observer.get(); }
     void trace(Visitor*);
 
 private:
     Deque<RefPtr<DOMArrayBuffer> > m_queue;
     bool m_isClosed;
     RefPtrWillBeMember<DOMException> m_exception;
     Member<Observer> m_observer;
 };
 
 } // namespace blink
 
 #endif // BodyStreamBuffer_h