Revert of media: Introduce Renderer interface and RendererImpl.

media/filters/video_renderer_impl.cc

Index: media/filters/video_renderer_impl.cc
diff --git a/media/filters/video_renderer_impl.cc b/media/filters/video_renderer_impl.cc
index 6866855495fed088290be3616616fb63d80fb42a..25099ca0f84a7a06a6761af150cc01c17f022b4d 100644
--- a/media/filters/video_renderer_impl.cc
+++ b/media/filters/video_renderer_impl.cc
@@ -11,7 +11,6 @@
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/platform_thread.h"
-#include "media/base/bind_to_current_loop.h"
 #include "media/base/buffers.h"
 #include "media/base/limits.h"
 #include "media/base/pipeline.h"
@@ -127,10 +126,7 @@
 
   low_delay_ = low_delay;
 
-  // Always post |init_cb_| because |this| could be destroyed if initialization
-  // failed.
-  init_cb_ = BindToCurrentLoop(init_cb);
-
+  init_cb_ = init_cb;
   statistics_cb_ = statistics_cb;
   max_time_cb_ = max_time_cb;
   buffering_state_cb_ = buffering_state_cb;
@@ -296,7 +292,6 @@
 
 void VideoRendererImpl::FrameReady(VideoFrameStream::Status status,
                                    const scoped_refptr<VideoFrame>& frame) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
   base::AutoLock auto_lock(lock_);
   DCHECK_NE(state_, kUninitialized);
   DCHECK_NE(state_, kFlushed);
@@ -310,7 +305,7 @@
     PipelineStatus error = PIPELINE_ERROR_DECODE;
     if (status == VideoFrameStream::DECRYPT_ERROR)
       error = PIPELINE_ERROR_DECRYPT;
-    task_runner_->PostTask(FROM_HERE, base::Bind(error_cb_, error));
+    error_cb_.Run(error);
     return;
   }