Mac Overlays: Allow SolidColor and Tile quads to be candidates for overlays.

cc/output/overlay_strategy_underlay.cc

Index: cc/output/overlay_strategy_underlay.cc
diff --git a/cc/output/overlay_strategy_underlay.cc b/cc/output/overlay_strategy_underlay.cc
index 9a8a3628d55bfc8511fc9122ee216e1d754d6898..c321a42222538e7c79873735632fd3deab7f5576 100644
--- a/cc/output/overlay_strategy_underlay.cc
+++ b/cc/output/overlay_strategy_underlay.cc
@@ -24,7 +24,8 @@ bool OverlayStrategyUnderlay::Attempt(ResourceProvider* resource_provider,
   QuadList& quad_list = render_passes->back()->quad_list;
   for (auto it = quad_list.begin(); it != quad_list.end(); ++it) {
     OverlayCandidate candidate;
-    if (!OverlayCandidate::FromDrawQuad(resource_provider, *it, &candidate))
+    if (!capability_checker_->IsSupportedQuad(*it) ||
+        !OverlayCandidate::FromDrawQuad(resource_provider, *it, &candidate))
       continue;
 
     // Add the overlay.