Revert 194993 "Remove reference counting from media::VideoDecode..."

trunk/src/media/base/video_decoder.h

Index: trunk/src/media/base/video_decoder.h
===================================================================
--- trunk/src/media/base/video_decoder.h	(revision 195011)
+++ trunk/src/media/base/video_decoder.h	(working copy)
@@ -16,7 +16,8 @@
 class DemuxerStream;
 class VideoFrame;
 
-class MEDIA_EXPORT VideoDecoder {
+class MEDIA_EXPORT VideoDecoder
+    : public base::RefCountedThreadSafe<VideoDecoder> {
  public:
   // Status codes for read operations on VideoDecoder.
   enum Status {
@@ -25,9 +26,6 @@
     kDecryptError  // Decrypting error happened.
   };
 
-  VideoDecoder();
-  virtual ~VideoDecoder();
-
   // Initializes a VideoDecoder with the given DemuxerStream, executing the
   // |status_cb| upon completion.
   // |statistics_cb| is used to update the global pipeline statistics.
@@ -79,7 +77,11 @@
   // use a fixed set of VideoFrames for decoding.
   virtual bool HasOutputFrameAvailable() const;
 
- private:
+ protected:
+  friend class base::RefCountedThreadSafe<VideoDecoder>;
+  virtual ~VideoDecoder();
+  VideoDecoder();
+
   DISALLOW_COPY_AND_ASSIGN(VideoDecoder);
 };