Use MediaCodec.setOutputSurface() for fullscreen transitions on M.

media/gpu/avda_codec_image.h

Index: media/gpu/avda_codec_image.h
diff --git a/media/gpu/avda_codec_image.h b/media/gpu/avda_codec_image.h
index fd96fa759613e2a4e0decd685e8688c1799f686e..45653b3dffcd593e4a2dabf85f8d2fc6c4bb2b77 100644
--- a/media/gpu/avda_codec_image.h
+++ b/media/gpu/avda_codec_image.h
@@ -143,9 +143,6 @@ class AVDACodecImage : public gpu::gles2::GLStreamTextureImage {
 
   const base::WeakPtr<gpu::gles2::GLES2Decoder> decoder_;
 
-  // Indicates if we're rendering to a SurfaceTexture or not.
-  const bool has_surface_texture_;
-
   // The texture that we're attached to.
   gpu::gles2::Texture* texture_;