Add an IPC to abort Stream construction.

content/child/webblobregistry_impl.h

 // Copyright 2013 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 CONTENT_CHILD_FILEAPI_WEBBLOBREGISTRY_IMPL_H_
 #define CONTENT_CHILD_FILEAPI_WEBBLOBREGISTRY_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebBlobRegistry.h"
 #include "webkit/common/blob/blob_data.h"
@@ skipping 19 matching lines @@
                                const WebKit::WebURL& src_url);
   virtual void unregisterBlobURL(const WebKit::WebURL& url);
 
   virtual void registerStreamURL(const WebKit::WebURL& url,
                                  const WebKit::WebString& content_type);
   virtual void registerStreamURL(const WebKit::WebURL& url,
                                  const WebKit::WebURL& src_url);
   virtual void addDataToStream(const WebKit::WebURL& url,
                                WebKit::WebThreadSafeData& data);
   virtual void finalizeStream(const WebKit::WebURL& url);
+  virtual void abortStream(const WebKit::WebURL& url);
   virtual void unregisterStreamURL(const WebKit::WebURL& url);
 
  private:
   void SendDataForBlob(const WebKit::WebURL& url,
                        const WebKit::WebThreadSafeData& data);
 
   scoped_refptr<ThreadSafeSender> sender_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_FILEAPI_WEBBLOBREGISTRY_IMPL_H_