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

cc/output/overlay_strategy_common.cc

Index: cc/output/overlay_strategy_common.cc
diff --git a/cc/output/overlay_strategy_common.cc b/cc/output/overlay_strategy_common.cc
index d142ba541555ef1dc2d4f0c31227fbcf4ccc0c70..2da0dd5159359234a8cc40513559dce21a8656cd 100644
--- a/cc/output/overlay_strategy_common.cc
+++ b/cc/output/overlay_strategy_common.cc
@@ -28,7 +28,8 @@ bool OverlayStrategyCommon::Attempt(RenderPassList* render_passes_in_draw_order,
   QuadList& quad_list = root_render_pass->quad_list;
   for (auto it = quad_list.begin(); it != quad_list.end();) {
     OverlayCandidate candidate;
-    if (!OverlayCandidate::FromDrawQuad(*it, &candidate)) {
+    if (!OverlayCandidate::IsAllowedQuad(*it) ||
+        !OverlayCandidate::FromDrawQuad(*it, &candidate)) {
       ++it;
       continue;
     }