cc: Remove right quad for fullscreen overlays.

cc/output/overlay_strategy_fullscreen.cc

Index: cc/output/overlay_strategy_fullscreen.cc
diff --git a/cc/output/overlay_strategy_fullscreen.cc b/cc/output/overlay_strategy_fullscreen.cc
index b848bb6cd8f348866e9281fed8eb3021d00eada1..7cc8b7d9082ea1ad9bfd71568fb046d83ce5c746 100644
--- a/cc/output/overlay_strategy_fullscreen.cc
+++ b/cc/output/overlay_strategy_fullscreen.cc
@@ -51,7 +51,7 @@ bool OverlayStrategyFullscreen::Attempt(ResourceProvider* resource_provider,
   candidate.plane_z_order = 1;
   candidate.overlay_handled = true;
   candidate_list->push_back(candidate);
-  quad_list->EraseAndInvalidateAllPointers(quad_list->begin());
+  quad_list->EraseAndInvalidateAllPointers(front);
   return true;
 }