Plumb ColorSpace to overlay with SharedImage AHB

Currently SurfaceControl takes color space of overlay from GLImage.
This CL fixes missed setting color space from SharedImageBackingAHB
to OverlayImage.

Change-Id: If0c53160a1bfdfb99d8dc40a2e44e1ba04962018
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2037311
Commit-Queue: Vasiliy Telezhnikov <vasilyt@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Auto-Submit: Vasiliy Telezhnikov <vasilyt@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738190}

gpu/command_buffer/service/shared_image_backing_factory_ahardwarebuffer.cc

@@ -777,6 +777,7 @@ gl::GLImage* SharedImageBackingAHB::BeginOverlayAccess() {
   if (!overlay_image_) {
     overlay_image_ =
         base::MakeRefCounted<OverlayImage>(hardware_buffer_handle_.get());
+    overlay_image_->SetColorSpace(color_space());
   }
 
   if (write_sync_fd_.is_valid()) {