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

content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc

Index: content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc
diff --git a/content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc b/content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc
index 8fbbc1a73780c89e249741835d55ef42df579547..1929679def3bd8827858cc02bba1605ba5e8ef71 100644
--- a/content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc
+++ b/content/browser/compositor/browser_compositor_overlay_candidate_validator_ozone.cc
@@ -6,6 +6,7 @@
 
 #include "cc/output/overlay_strategy_single_on_top.h"
 #include "cc/output/overlay_strategy_underlay.h"
+#include "cc/quads/texture_draw_quad.h"
 #include "ui/ozone/public/overlay_candidates_ozone.h"
 
 namespace content {
@@ -42,6 +43,19 @@ void BrowserCompositorOverlayCandidateValidatorOzone::GetStrategies(
   strategies->push_back(make_scoped_ptr(new cc::OverlayStrategyUnderlay(this)));
 }
 
+bool BrowserCompositorOverlayCandidateValidatorOzone::IsSupportedQuad(
+    const cc::DrawQuad* quad) {
+  switch (quad->material) {
+    case cc::DrawQuad::STREAM_VIDEO_CONTENT:
+      return true;
+    case cc::DrawQuad::TEXTURE_CONTENT:
+      return !cc::TextureDrawQuad::MaterialCast(quad)->premultiplied_alpha;
+    default:
+      break;
+  }
+  return false;
+}
+
 void BrowserCompositorOverlayCandidateValidatorOzone::CheckOverlaySupport(
     cc::OverlayCandidateList* surfaces) {
   // SW mirroring copies out of the framebuffer, so we can't remove any