VAVDA: Fix a crash if we fail parsing SPS/DecodeInitial.

content/common/gpu/media/vaapi_h264_decoder.h

 // 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.
 //
 // This file contains an implementation of a class that provides H264 decode
 // support for use with VAAPI hardware video decode acceleration on Intel
 // systems.
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DECODER_H_
 #define CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DECODER_H_
@@ skipping 315 matching lines @@
   // X/GLX handles.
   Display* x_display_;
   base::Callback<bool(void)> make_context_current_;
   GLXFBConfig fb_config_;
 
   // VA handles.
   VADisplay va_display_;
   VAConfigID va_config_id_;
   VAContextID va_context_id_;
   VAProfile profile_;
+  bool va_context_created_;
 
   // Allocated VASurfaces.
   VASurfaceID va_surface_ids_[kNumReqPictures];
 
   // Called by decoder when a picture should be outputted.
   OutputPicCB output_pic_cb_;
 
   // Has static initialization of pre-sandbox components completed successfully?
   static bool pre_sandbox_init_done_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiH264Decoder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DECODER_H_