cc: Plumb device color space through to rasterization

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 95c84c3aaf383f2c68435a1744b4c707f04ea707..a9133ec9ee92f91afc5a0986bdcf39b83c8dfa60 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -1324,6 +1324,12 @@ void LayerTreeHostImpl::SetIsLikelyToRequireADraw(
   is_likely_to_require_a_draw_ = is_likely_to_require_a_draw;
 }
 
+gfx::ColorSpace LayerTreeHostImpl::GetTileColorSpace() const {
+  if (!sync_tree())
+    return gfx::ColorSpace();
+  return sync_tree()->device_color_space();
+}
+
 void LayerTreeHostImpl::NotifyReadyToActivate() {
   client_->NotifyReadyToActivate();
 }