Implement chrome.streamsPrivate.abort() extensions function

chrome/browser/extensions/api/streams_private/streams_private_api.h

 // Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_
 
 #include <map>
 #include <string>
 
@@ skipping 17 matching lines @@
   static StreamsPrivateAPI* Get(content::BrowserContext* context);
 
   explicit StreamsPrivateAPI(content::BrowserContext* context);
   virtual ~StreamsPrivateAPI();
 
   void ExecuteMimeTypeHandler(const std::string& extension_id,
                               content::WebContents* web_contents,
                               scoped_ptr<content::StreamHandle> stream,
                               int64 expected_content_size);
 
+  void AbortStream(const std::string& extension_id,
+                   const GURL& stream_url,
+                   const base::Closure& callback);
+
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<StreamsPrivateAPI>* GetFactoryInstance();
 
  private:
   friend class BrowserContextKeyedAPIFactory<StreamsPrivateAPI>;
   typedef std::map<std::string,
                    std::map<GURL,
                             linked_ptr<content::StreamHandle> > > StreamMap;
 
   // ExtensionRegistryObserver implementation.
@@ skipping 11 matching lines @@
 
   content::BrowserContext* const browser_context_;
   StreamMap streams_;
   base::WeakPtrFactory<StreamsPrivateAPI> weak_ptr_factory_;
 
   // Listen to extension unloaded notifications.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 };
 
+class StreamsPrivateAbortFunction : public UIThreadExtensionFunction {
+ public:
+  StreamsPrivateAbortFunction();
+  DECLARE_EXTENSION_FUNCTION("streamsPrivate.abort", STREAMSPRIVATE_ABORT)
+
+ protected:
+  virtual ~StreamsPrivateAbortFunction() {}
+
+  // ExtensionFunction:
+  virtual ExtensionFunction::ResponseAction Run() OVERRIDE;
+
+ private:
+  void OnClose();
+
+  std::string stream_url_;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_