Add Resource Handler for creating Streams to forward to extensions

content/browser/streams/stream_handle_impl.h

+// Copyright (c) 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_BROWSER_STREAMS_STREAM_HANDLE_IMPL_H_
+#define CONTENT_BROWSER_STREAMS_STREAM_HANDLE_IMPL_H_
+
+#include "base/memory/weak_ptr.h"
+#include "base/message_loop_proxy.h"
+#include "base/synchronization/lock.h"
+#include "content/public/browser/stream_handle.h"
+
+namespace content {
+
+class Stream;
+
+class StreamHandleImpl : public StreamHandle {
+ public:
+  StreamHandleImpl(const base::WeakPtr<Stream>& stream,
+                   const GURL& original_url,
+                   const std::string& mime_type);
+  virtual ~StreamHandleImpl();
+
+  void OnStreamConsumed();
+
+ private:
+  // StreamHandle overrides
+  virtual const GURL& GetURL() OVERRIDE;
+  virtual const GURL& GetOriginalURL() OVERRIDE;
+  virtual const std::string& GetMimeType() OVERRIDE;
+  virtual void NotifyWhenConsumed(const base::Closure& callback) OVERRIDE;
+
+  base::WeakPtr<Stream> stream_;
+  GURL url_;
+  GURL original_url_;
+  std::string mime_type_;
+  base::MessageLoopProxy* stream_message_loop_;
+  base::MessageLoopProxy* callback_message_loop_;
+  base::Closure callback_;
+  // callback_lock_ protects callback_message_loop_ and callback_.
+  base::Lock callback_lock_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_STREAMS_STREAM_HANDLE_IMPL_H_
+