Add PpapiDecryptor which wraps a CDM plugin.

webkit/media/webmediaplayer_impl.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.
 
 // 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 249 matching lines @@
   // they've changed.
   void SetNetworkState(WebKit::WebMediaPlayer::NetworkState state);
   void SetReadyState(WebKit::WebMediaPlayer::ReadyState state);
 
   // Destroy resources held.
   void Destroy();
 
   // Getter method to |client_|.
   WebKit::WebMediaPlayerClient* GetClient();
 
+  // Create a plugin instance based on the |plugin_type|.
+  // TODO(xhwang): Change WebMediaPlayerClient::createHelperPlugin()'s
+  // parameter order so this can be replaced by a base::Bind().
+  scoped_refptr<webkit::ppapi::PluginInstance> CreatePluginInstance(
+      const std::string& plugin_type);
+
   // Lets V8 know that player uses extra resources not managed by V8.
   void IncrementExternallyAllocatedMemory();
 
   WebKit::WebFrame* frame_;
 
   // TODO(hclam): get rid of these members and read from the pipeline directly.
   WebKit::WebMediaPlayer::NetworkState network_state_;
   WebKit::WebMediaPlayer::ReadyState ready_state_;
 
   // Keep a list of buffered time ranges.
@@ skipping 64 matching lines @@
 
   // The decryptor that manages decryption keys and decrypts encrypted frames.
   ProxyDecryptor decryptor_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace webkit_media
 
 #endif  // WEBKIT_MEDIA_WEBMEDIAPLAYER_IMPL_H_