Revert 235128 "Remove GSC usage from ExynosVideoDecodeAccelerator."

cc/layers/video_layer_impl.cc

Index: cc/layers/video_layer_impl.cc
===================================================================
--- cc/layers/video_layer_impl.cc	(revision 235426)
+++ cc/layers/video_layer_impl.cc	(working copy)
@@ -214,16 +214,16 @@
       DCHECK_EQ(frame_resources_.size(), 1u);
       if (frame_resources_.size() < 1u)
         break;
-      gfx::Transform scale;
-      scale.Scale(tex_width_scale, tex_height_scale);
+      gfx::Transform transform(
+          provider_client_impl_->stream_texture_matrix());
+      transform.Scale(tex_width_scale, tex_height_scale);
       scoped_ptr<StreamVideoDrawQuad> stream_video_quad =
           StreamVideoDrawQuad::Create();
-      stream_video_quad->SetNew(
-          shared_quad_state,
-          quad_rect,
-          opaque_rect,
-          frame_resources_[0],
-          scale * provider_client_impl_->stream_texture_matrix());
+      stream_video_quad->SetNew(shared_quad_state,
+                                quad_rect,
+                                opaque_rect,
+                                frame_resources_[0],
+                                transform);
       quad_sink->Append(stream_video_quad.PassAs<DrawQuad>(),
                         append_quads_data);
       break;