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

cc/output/overlay_strategy_common.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/overlay_strategy_common.h"
 
 #include "cc/quads/solid_color_draw_quad.h"
 
 namespace cc {
 
@@ skipping 10 matching lines @@
                                     float device_scale_factor) {
   if (!capability_checker_)
     return false;
   RenderPass* root_render_pass = render_passes_in_draw_order->back();
   DCHECK(root_render_pass);
 
   bool created_overlay = false;
   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;
     }
 
     OverlayResult result = delegate_->TryOverlay(
         capability_checker_, render_passes_in_draw_order, candidate_list,
         candidate, &it, device_scale_factor);
     switch (result) {
       case DID_NOT_CREATE_OVERLAY:
         ++it;
@@ skipping 17 matching lines @@
     SkColor color = solid_quad->color;
     float opacity = solid_quad->shared_quad_state->opacity;
     float alpha = (SkColorGetA(color) * (1.0f / 255.0f)) * opacity;
     return solid_quad->ShouldDrawWithBlending() &&
            alpha < std::numeric_limits<float>::epsilon();
   }
   return false;
 }
 
 }  // namespace cc