Connect webrtc::Config to WrappingBitrateEstimator

This is the second CL for this change. Connection to the ViE API
remains to be done.

BUG=2698
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/5769004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5455 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/vie_channel_manager.h b/video_engine/vie_channel_manager.h
index db9eb11..8325098 100644
--- a/video_engine/vie_channel_manager.h
+++ b/video_engine/vie_channel_manager.h
@@ -50,7 +50,8 @@
   void SetModuleProcessThread(ProcessThread* module_process_thread);
 
   // Creates a new channel. 'channel_id' will be the id of the created channel.
-  int CreateChannel(int* channel_id);
+  int CreateChannel(int* channel_id,
+                    const Config* config);
 
   // Creates a new channel grouped with |original_channel|. The new channel
   // will get its own |ViEEncoder| if |sender| is set to true. It will be a
@@ -131,7 +132,7 @@
 
   VoiceEngine* voice_engine_;
   ProcessThread* module_process_thread_;
-  const Config& config_;
+  const Config& engine_config_;
 };
 
 class ViEChannelManagerScoped: private ViEManagerScopedBase {