Add flag to signal that video frame must be drawn using an overlay.

cc/ipc/quads_struct_traits.h

 // 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.
 
 #ifndef CC_IPC_QUADS_STRUCT_TRAITS_H_
 #define CC_IPC_QUADS_STRUCT_TRAITS_H_
 
 #include "base/logging.h"
 #include "cc/ipc/filter_operation_struct_traits.h"
 #include "cc/ipc/filter_operations_struct_traits.h"
@@ skipping 402 matching lines @@
   static uint32_t bits_per_channel(const cc::DrawQuad& input) {
     const cc::YUVVideoDrawQuad* quad =
         cc::YUVVideoDrawQuad::MaterialCast(&input);
     return quad->bits_per_channel;
   }
   static gfx::ColorSpace video_color_space(const cc::DrawQuad& input) {
     const cc::YUVVideoDrawQuad* quad =
         cc::YUVVideoDrawQuad::MaterialCast(&input);
     return quad->video_color_space;
   }
+  static bool require_overlay(const cc::DrawQuad& input) {
+    const cc::YUVVideoDrawQuad* quad =
+        cc::YUVVideoDrawQuad::MaterialCast(&input);
+    return quad->require_overlay;
+  }
 
   static bool Read(cc::mojom::YUVVideoQuadStateDataView data,
                    cc::DrawQuad* out);
 };
 
 struct DrawQuadWithSharedQuadState {
   const cc::DrawQuad* quad;
   const cc::SharedQuadState* shared_quad_state;
 };
 
@@ skipping 62 matching lines @@
       dq.shared_quad_state = current_sqs;
     return dq;
   }
 
   static size_t GetSize(const cc::QuadList& input) { return input.size(); }
 };
 
 }  // namespace mojo
 
 #endif  // CC_IPC_QUADS_STRUCT_TRAITS_H_