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>
 
 #include "base/scoped_observer.h"
+#include "extensions/browser/api/async_api_function.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_function.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 namespace content {
 class BrowserContext;
 class StreamHandle;
 }
 
 namespace extensions {
 class ExtensionRegistry;
 
 class StreamsPrivateAPI : public BrowserContextKeyedAPI,
                           public ExtensionRegistryObserver {
  public:
   // Convenience method to get the StreamsPrivateAPI for a BrowserContext.
   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);
+
   // 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 AsyncApiFunction {

[Zachary Kuznia, 2014/05/15 13:43:27]

Is there a reason you don't derive from SyncExtensionFunction?  It looks like
you know immediately if the call succeeded or failed.

[raymes, 2014/05/16 01:09:19]

Done.

+ public:
+  StreamsPrivateAbortFunction();
+  DECLARE_EXTENSION_FUNCTION("streamsPrivate.abort", STREAMSPRIVATE_ABORT)
+
+ protected:
+  virtual ~StreamsPrivateAbortFunction() {}
+
+  // AsyncApiFunction:
+  virtual bool Prepare() OVERRIDE;
+  virtual bool Respond() OVERRIDE;
+
+ private:
+  std::string stream_url_;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_