Remove VideoDecoder::PrepareForShutdownHack() and friends.

media/filters/video_renderer_base.cc

 // 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.
 
 #include "media/filters/video_renderer_base.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/threading/platform_thread.h"
@@ skipping 196 matching lines @@
   }
 
 #if defined(OS_WIN)
   // Bump up our priority so our sleeping is more accurate.
   // TODO(scherkus): find out if this is necessary, but it seems to help.
   ::SetThreadPriority(thread_, THREAD_PRIORITY_ABOVE_NORMAL);
 #endif  // defined(OS_WIN)
   base::ResetAndReturn(&init_cb_).Run(PIPELINE_OK);
 }
 
-void VideoRendererBase::PrepareForShutdownHack() {
-  base::AutoLock auto_lock(lock_);
-  if (decoder_)
-    decoder_->PrepareForShutdownHack();
-}
-
 // PlatformThread::Delegate implementation.
 void VideoRendererBase::ThreadMain() {
   base::PlatformThread::SetName("CrVideoRenderer");
 
   // The number of milliseconds to idle when we do not have anything to do.
   // Nothing special about the value, other than we're being more OS-friendly
   // than sleeping for 1 millisecond.
   //
   // TOOD(scherkus): switch to pure event-driven frame timing instead of this
   // kIdleTimeDelta business http://crbug.com/106874
@@ skipping 394 matching lines @@
 
 int VideoRendererBase::NumFrames_Locked() const {
   lock_.AssertAcquired();
   int outstanding_frames =
       (current_frame_ ? 1 : 0) + (last_available_frame_ ? 1 : 0) +
       (current_frame_ && (current_frame_ == last_available_frame_) ? -1 : 0);
   return ready_frames_.size() + outstanding_frames;
 }
 
 }  // namespace media