Disable fullscren fb optimization with sw mirroring.

cc/output/overlay_strategy_fullscreen.cc

 // Copyright 2016 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_fullscreen.h"
 
 #include "cc/base/math_util.h"
 #include "cc/output/overlay_candidate_validator.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 
 namespace cc {
 
-OverlayStrategyFullscreen::OverlayStrategyFullscreen() {}
+OverlayStrategyFullscreen::OverlayStrategyFullscreen(
+    OverlayCandidateValidator* capability_checker)
+    : capability_checker_(capability_checker) {
+  DCHECK(capability_checker);
+}
 
 OverlayStrategyFullscreen::~OverlayStrategyFullscreen() {}
 
 bool OverlayStrategyFullscreen::Attempt(ResourceProvider* resource_provider,
                                         RenderPass* render_pass,
                                         OverlayCandidateList* candidate_list) {
   QuadList* quad_list = &render_pass->quad_list;
   // First quad of quad_list is the top most quad.
   auto front = quad_list->begin();
   while (front != quad_list->end()) {
@@ skipping 18 matching lines @@
       gfx::ToRoundedSize(candidate.display_rect.size()) !=
           render_pass->output_rect.size() ||
       render_pass->output_rect.size() != candidate.resource_size_in_pixels) {
     return false;
   }
 
   candidate.plane_z_order = 0;
   candidate.overlay_handled = true;
   OverlayCandidateList new_candidate_list;
   new_candidate_list.push_back(candidate);
+  capability_checker_->CheckOverlaySupport(&new_candidate_list);
+  if (!new_candidate_list.front().overlay_handled)
+    return false;
+
   candidate_list->swap(new_candidate_list);
+
   render_pass->quad_list = QuadList();  // Remove all the quads
   return true;
 }
 
 }  // namespace cc