VP8Decoder: Drop references to reference frames earlier.

content/common/gpu/media/vp8_decoder.cc

 // Copyright 2015 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/common/gpu/media/vp8_decoder.h"
 #include "media/base/limits.h"
 
 namespace content {
 
 VP8Decoder::VP8Accelerator::VP8Accelerator() {
@@ skipping 57 matching lines @@
   }
 
   if (curr_frame_hdr_->IsKeyframe()) {
     gfx::Size new_pic_size(curr_frame_hdr_->width, curr_frame_hdr_->height);
     if (new_pic_size.IsEmpty())
       return kDecodeError;
 
     if (new_pic_size != pic_size_) {
       DVLOG(2) << "New resolution: " << new_pic_size.ToString();
       pic_size_ = new_pic_size;
+
+      DCHECK(!curr_pic_);
+      last_frame_ = nullptr;
+      golden_frame_ = nullptr;
+      alt_frame_ = nullptr;
+
       return kAllocateNewSurfaces;
     }
 
     state_ = kDecoding;
   } else {
     if (state_ != kDecoding) {
       // Need a resume point.
       curr_frame_hdr_.reset();
       return kRanOutOfStreamData;
     }
@@ skipping 89 matching lines @@
   return true;
 }
 
 size_t VP8Decoder::GetRequiredNumOfPictures() const {
   const size_t kVP8NumFramesActive = 4;
   const size_t kPicsInPipeline = media::limits::kMaxVideoFrames + 2;
   return kVP8NumFramesActive + kPicsInPipeline;
 }
 
 }  // namespace content