AVDACodecImages keep their backing SurfaceTexture alive

media/gpu/avda_state_provider.h

 // 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.
 
 #ifndef MEDIA_GPU_AVDA_STATE_PROVIDER_H_
 #define MEDIA_GPU_AVDA_STATE_PROVIDER_H_
 
 #include "base/compiler_specific.h"
 #include "base/threading/thread_checker.h"
 #include "gpu/command_buffer/service/texture_manager.h"
-#include "media/gpu/media_gpu_export.h"
 #include "media/video/video_decode_accelerator.h"
 
 namespace gl {
 class SurfaceTexture;
 }
 
 namespace gpu {
 namespace gles2 {
 class GLES2Decoder;
 }
 }
 
 namespace media {
-class VideoCodecBridge;
-}
-
-namespace media {
 
 // Helper class that provides the BackingStrategy with enough state
 // to do useful work.
 class AVDAStateProvider {
  public:
-  virtual ~AVDAStateProvider() {}
-
   // Various handy getters.
   virtual const gfx::Size& GetSize() const = 0;
   virtual const base::ThreadChecker& ThreadChecker() const = 0;
   virtual base::WeakPtr<gpu::gles2::GLES2Decoder> GetGlDecoder() const = 0;
   virtual gpu::gles2::TextureRef* GetTextureForPicture(
       const media::PictureBuffer& picture_buffer) = 0;
 
+  // Create a SurfaceTexture and attach a new gl texture to it. |*service_id|
+  // is set to the created texture id.
+  virtual scoped_refptr<gl::SurfaceTexture> CreateAttachedSurfaceTexture(
+      GLuint* service_id) = 0;
+
   // Helper function to report an error condition and stop decoding.
   // This will post NotifyError(), and transition to the error state.
   // It is meant to be called from the RETURN_ON_FAILURE macro.
   virtual void PostError(const ::tracked_objects::Location& from_here,
                          media::VideoDecodeAccelerator::Error error) = 0;
+
+ protected:
+  ~AVDAStateProvider() = default;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_AVDA_STATE_PROVIDER_H_