Don't require VDAs to return all PictureBuffers at once.

media/video/video_decode_accelerator.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 "media/video/video_decode_accelerator.h"
 
 #include <GLES2/gl2.h>
 #include "base/logging.h"
 
 namespace media {
@@ skipping 20 matching lines @@
   // GPU process subclasses must override this.
   LOG(FATAL) << "This should only get called in the GPU process";
   return false;  // not reached
 }
 
 GLenum VideoDecodeAccelerator::GetSurfaceInternalFormat() const {
   return GL_RGBA;
 }
 
 VideoDecodeAccelerator::SupportedProfile::SupportedProfile()
-    : profile(media::VIDEO_CODEC_PROFILE_UNKNOWN) {
-}
+    : profile(media::VIDEO_CODEC_PROFILE_UNKNOWN) {}
 
-VideoDecodeAccelerator::SupportedProfile::~SupportedProfile() {
-}
+VideoDecodeAccelerator::SupportedProfile::~SupportedProfile() {}
+
+VideoDecodeAccelerator::Capabilities::Capabilities() : flags(NO_FLAGS) {}
+
+VideoDecodeAccelerator::Capabilities::~Capabilities() {}
 
 } // namespace media
 
 namespace std {
 
 void default_delete<media::VideoDecodeAccelerator>::operator()(
     media::VideoDecodeAccelerator* vda) const {
   vda->Destroy();
 }
 
 }  // namespace std