Add SurfaceTexture::release and call it from AVDA.

media/gpu/android_copying_backing_strategy.cc

Index: media/gpu/android_copying_backing_strategy.cc
diff --git a/media/gpu/android_copying_backing_strategy.cc b/media/gpu/android_copying_backing_strategy.cc
index 3435fb77a5bb9b28de41e81485fa06933698514f..f04349871df71a198b2efb59b4e9f677129d2857 100644
--- a/media/gpu/android_copying_backing_strategy.cc
+++ b/media/gpu/android_copying_backing_strategy.cc
@@ -39,7 +39,7 @@ gl::ScopedJavaSurface AndroidCopyingBackingStrategy::Initialize(
   return gl::ScopedJavaSurface(surface_texture_.get());
 }
 
-void AndroidCopyingBackingStrategy::Cleanup(
+void AndroidCopyingBackingStrategy::BeginCleanup(
     bool have_context,
     const AndroidVideoDecodeAccelerator::OutputBufferMap& buffers) {
   DCHECK(state_provider_->ThreadChecker().CalledOnValidThread());
@@ -51,6 +51,8 @@ void AndroidCopyingBackingStrategy::Cleanup(
     glDeleteTextures(1, &surface_texture_id_);
 }
 
+void AndroidCopyingBackingStrategy::EndCleanup() {}
+
 scoped_refptr<gl::SurfaceTexture>
 AndroidCopyingBackingStrategy::GetSurfaceTexture() const {
   return surface_texture_;