cc: Remove IOSurface explicit support in VideoLayerImpl.

cc/layers/video_layer_impl.cc

Index: cc/layers/video_layer_impl.cc
diff --git a/cc/layers/video_layer_impl.cc b/cc/layers/video_layer_impl.cc
index 759c79de26499667d1fa34762ad8117cb934c08f..ae6d9be03e9684596710093ec3955847bf604d9e 100644
--- a/cc/layers/video_layer_impl.cc
+++ b/cc/layers/video_layer_impl.cc
@@ -320,22 +320,6 @@ void VideoLayerImpl::AppendQuads(RenderPass* render_pass,
       ValidateQuadResources(stream_video_quad);
       break;
     }
-    case VideoFrameExternalResources::IO_SURFACE: {
-      DCHECK_EQ(frame_resources_.size(), 1u);
-      if (frame_resources_.size() < 1u)
-        break;
-      IOSurfaceDrawQuad* io_surface_quad =
-          render_pass->CreateAndAppendDrawQuad<IOSurfaceDrawQuad>();
-      io_surface_quad->SetNew(shared_quad_state,
-                              quad_rect,
-                              opaque_rect,
-                              visible_quad_rect,
-                              visible_rect.size(),
-                              frame_resources_[0],
-                              IOSurfaceDrawQuad::UNFLIPPED);
-      ValidateQuadResources(io_surface_quad);
-      break;
-    }
 #if defined(VIDEO_HOLE)
     // This block and other blocks wrapped around #if defined(VIDEO_HOLE) is not
     // maintained by the general compositor team. Please contact the following