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

content/common/gpu/media/android_deferred_rendering_backing_strategy.h

Index: content/common/gpu/media/android_deferred_rendering_backing_strategy.h
diff --git a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
index 7fb8d2b083f60ccc0d01fa8ad37322d13e855222..c56d3df90744681f980717d873480bce0d0d1075 100644
--- a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
+++ b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
@@ -36,7 +36,6 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
   // AndroidVideoDecodeAccelerator::BackingStrategy
   void Initialize(AVDAStateProvider*) override;
   void Cleanup(const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
-  uint32 GetNumPictureBuffers() const override;
   uint32 GetTextureTarget() const override;
   scoped_refptr<gfx::SurfaceTexture> CreateSurfaceTexture() override;
   void UseCodecBufferForPictureBuffer(int32 codec_buffer_index,
@@ -48,6 +47,11 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
       media::VideoCodecBridge*,
       const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
 
+  static media::VideoDecodeAccelerator::Capabilities::Flags
+  GetCapabilitiesFlags() {
+    return media::VideoDecodeAccelerator::Capabilities::CAN_STALL_ANY_TIME;
+  }
+
  private:
   // Release any codec buffer that is associated with the given picture buffer
   // back to the codec.  It is okay if there is no such buffer.