Cast: Removed unnecessary ref counters.

media/cast/video_sender/video_encoder.h

Index: media/cast/video_sender/video_encoder.h
diff --git a/media/cast/video_sender/video_encoder.h b/media/cast/video_sender/video_encoder.h
index c15473654c6bbfe6d693566ac0e32f754b7cbb88..4140bfc79f6eb78eeb0a07384f49b2979ed30c14 100644
--- a/media/cast/video_sender/video_encoder.h
+++ b/media/cast/video_sender/video_encoder.h
@@ -5,8 +5,8 @@
 #ifndef MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_H_
 #define MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_H_
 
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "media/cast/cast_config.h"
 #include "media/cast/cast_environment.h"
@@ -21,8 +21,7 @@ namespace cast {
 
 // This object is called external from the main cast thread and internally from
 // the video encoder thread.
-class VideoEncoder : public VideoEncoderController,
-                     public base::RefCountedThreadSafe<VideoEncoder> {
+class VideoEncoder : public VideoEncoderController {
  public:
   typedef base::Callback<void(scoped_ptr<EncodedVideoFrame>,
                               const base::TimeTicks&)> FrameEncodedCallback;
@@ -31,6 +30,8 @@ class VideoEncoder : public VideoEncoderController,
                const VideoSenderConfig& video_config,
                uint8 max_unacked_frames);
 
+  virtual ~VideoEncoder();
+
   // Called from the main cast thread. This function post the encode task to the
   // video encoder thread;
   // The video_frame must be valid until the closure callback is called.
@@ -44,8 +45,6 @@ class VideoEncoder : public VideoEncoderController,
                         const base::Closure frame_release_callback);
 
  protected:
-  virtual ~VideoEncoder();
-
   struct CodecDynamicConfig {
     bool key_frame_requested;
     uint32 latest_frame_id_to_reference;
@@ -68,8 +67,6 @@ class VideoEncoder : public VideoEncoderController,
   virtual int NumberOfSkippedFrames() const OVERRIDE;
 
  private:
-  friend class base::RefCountedThreadSafe<VideoEncoder>;
-
   const VideoSenderConfig video_config_;
   scoped_refptr<CastEnvironment> cast_environment_;
   scoped_ptr<Vp8Encoder> vp8_encoder_;