Encrypted Media: Handle blink::WebString in WebMediaPlayer*.

content/renderer/media/webmediaplayer_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.
 
 // Delegate calls from WebCore::MediaPlayerPrivate to Chrome's video player.
 // It contains Pipeline which is the actual media player pipeline, it glues
 // the media player pipeline, data source, audio renderer and renderer.
 // Pipeline would creates multiple threads and access some public methods
 // of this class, so we need to be extra careful about concurrent access of
 // methods and members.
@@ skipping 226 matching lines @@
     RENDERFRAME_DESTROYED = 1 << 1,
   };
   void Destroy(DestroyReason reason);
 
   // Lets V8 know that player uses extra resources not managed by V8.
   void IncrementExternallyAllocatedMemory();
 
   // Actually do the work for generateKeyRequest/addKey so they can easily
   // report results to UMA.
   MediaKeyException GenerateKeyRequestInternal(
-      const blink::WebString& key_system,
+      const std::string& key_system,
       const unsigned char* init_data,
       unsigned init_data_length);
-  MediaKeyException AddKeyInternal(const blink::WebString& key_system,
+  MediaKeyException AddKeyInternal(const std::string& key_system,
                                    const unsigned char* key,
                                    unsigned key_length,
                                    const unsigned char* init_data,
                                    unsigned init_data_length,
-                                   const blink::WebString& session_id);
+                                   const std::string& session_id);
   MediaKeyException CancelKeyRequestInternal(
-      const blink::WebString& key_system,
-      const blink::WebString& session_id);
+      const std::string& key_system,
+      const std::string& session_id);
 
   // Gets the duration value reported by the pipeline.
   double GetPipelineDuration() const;
 
   // Callbacks from |pipeline_| that are forwarded to |client_|.
   void OnDurationChange();
   void OnNaturalSizeChange(gfx::Size size);
 
   // Called by VideoRendererImpl on its internal thread with the new frame to be
   // painted.
@@ skipping 16 matching lines @@
 
   // Message loops for posting tasks on Chrome's main thread. Also used
   // for DCHECKs so methods calls won't execute in the wrong thread.
   const scoped_refptr<base::MessageLoopProxy> main_loop_;
 
   scoped_ptr<media::Pipeline> pipeline_;
   scoped_refptr<base::MessageLoopProxy> media_loop_;
 
   // The currently selected key system. Empty string means that no key system
   // has been selected.
-  blink::WebString current_key_system_;
+  std::string current_key_system_;
 
   // The LoadType passed in the |load_type| parameter of the load() call.
   LoadType load_type_;
 
   // Playback state.
   //
   // TODO(scherkus): we have these because Pipeline favours the simplicity of a
   // single "playback rate" over worrying about paused/stopped etc...  It forces
   // all clients to manage the pause+playback rate externally, but is that
   // really a bad thing?
@@ skipping 80 matching lines @@
   // TODO(scherkus): Remove after tracking down cause for crashes
   // http://crbug.com/341184 http://crbug.com/341186
   uint32 destroy_reason_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_IMPL_H_