Made Destroy() followup more aggressive to test for races.

content/renderer/pepper_platform_video_decoder_impl.cc

 // Copyright (c) 2011 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 "content/renderer/pepper_platform_video_decoder_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 63 matching lines @@
 }
 
 void PlatformVideoDecoderImpl::Reset() {
   DCHECK(decoder_);
   decoder_->Reset();
 }
 
 void PlatformVideoDecoderImpl::Destroy() {
   DCHECK(decoder_);
   decoder_->Destroy();
+  client_ = NULL;
+  decoder_ = NULL;
 }
 
 void PlatformVideoDecoderImpl::NotifyEndOfStream() {
   DCHECK_EQ(RenderThread::current()->message_loop(), MessageLoop::current());
   client_->NotifyEndOfStream();
 }
 
 void PlatformVideoDecoderImpl::NotifyError(
     VideoDecodeAccelerator::Error error) {
   DCHECK_EQ(RenderThread::current()->message_loop(), MessageLoop::current());
@@ skipping 30 matching lines @@
 
 void PlatformVideoDecoderImpl::NotifyFlushDone() {
   DCHECK_EQ(RenderThread::current()->message_loop(), MessageLoop::current());
   client_->NotifyFlushDone();
 }
 
 void PlatformVideoDecoderImpl::NotifyResetDone() {
   DCHECK_EQ(RenderThread::current()->message_loop(), MessageLoop::current());
   client_->NotifyResetDone();
 }