Add DCLayerOverlayProcessor and supporting DCLayer structures.

components/display_compositor/compositor_overlay_candidate_validator_android.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 "components/display_compositor/compositor_overlay_candidate_validator_android.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/overlay_processor.h"
@@ skipping 38 matching lines @@
         gfx::RectF(gfx::ToEnclosingRect(candidate.display_rect));
     candidate.overlay_handled = true;
     candidate.plane_z_order = -1;
   }
 }
 
 bool CompositorOverlayCandidateValidatorAndroid::AllowCALayerOverlays() {
   return false;
 }
 
+bool CompositorOverlayCandidateValidatorAndroid::AllowDCLayerOverlays() {
+  return false;
+}
+
 // Overlays will still be allowed when software mirroring is enabled, even
 // though they won't appear in the mirror.
 void CompositorOverlayCandidateValidatorAndroid::SetSoftwareMirrorMode(
     bool enabled) {}
 
 }  // namespace display_compositor