ServiceWorker: Use mojo's data pipe for respondWith(stream)

third_party/WebKit/Source/modules/fetch/FetchDataLoader.h

 // 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.
 
 #ifndef FetchDataLoader_h
 #define FetchDataLoader_h
 
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/streams/Stream.h"
 #include "modules/ModulesExport.h"
+#include "mojo/public/cpp/system/data_pipe.h"
 #include "platform/blob/BlobData.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class BytesConsumer;
 
 // FetchDataLoader subclasses
 // 1. take a BytesConsumer,
@@ skipping 14 matching lines @@
 
     // The method corresponding to createLoaderAs... is called on success.
     virtual void DidFetchDataLoadedBlobHandle(PassRefPtr<BlobDataHandle>) {
       NOTREACHED();
     }
     virtual void DidFetchDataLoadedArrayBuffer(DOMArrayBuffer*) {
       NOTREACHED();
     }
     virtual void DidFetchDataLoadedString(const String&) { NOTREACHED(); }
     // This is called after all data are read from |handle| and written
-    // to |outStream|, and |outStream| is closed or aborted.
-    virtual void DidFetchDataLoadedStream() { NOTREACHED(); }
+    // to |out_datapipe|, and |out_datapipe| is closed or aborted.
+    virtual void DidFetchDataLoadedDataPipe() { NOTREACHED(); }
 
     // This function is called when a "custom" FetchDataLoader (none of the
     // ones listed above) finishes loading.
     virtual void DidFetchDataLoadedCustomFormat() { NOTREACHED(); }
 
     virtual void DidFetchDataLoadFailed() = 0;
 
     DEFINE_INLINE_VIRTUAL_TRACE() {}
   };
 
   static FetchDataLoader* CreateLoaderAsBlobHandle(const String& mime_type);
   static FetchDataLoader* CreateLoaderAsArrayBuffer();
   static FetchDataLoader* CreateLoaderAsString();
-  static FetchDataLoader* CreateLoaderAsStream(Stream*);
+  static FetchDataLoader* CreateLoaderAsDataPipe(
+      mojo::ScopedDataPipeProducerHandle out_datapipe);
+
   virtual ~FetchDataLoader() {}
 
   // |consumer| must not have a client when called.
   virtual void Start(BytesConsumer* /* consumer */, Client*) = 0;
 
   virtual void Cancel() = 0;
 
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 };
 
 }  // namespace blink
 
 #endif  // FetchDataLoader_h