ozone: introduce OverlayCheckReturn_Params

ui/ozone/common/gpu/ozone_gpu_message_params.h

 // Copyright 2014 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 UI_OZONE_COMMON_GPU_OZONE_GPU_MESSAGE_PARAMS_H_
 #define UI_OZONE_COMMON_GPU_OZONE_GPU_MESSAGE_PARAMS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 55 matching lines @@
   gfx::Size buffer_size;
   gfx::OverlayTransform transform = gfx::OVERLAY_TRANSFORM_NONE;
   gfx::BufferFormat format = gfx::BufferFormat::BGRA_8888;
   gfx::Rect display_rect;
   gfx::RectF crop_rect;
   int plane_z_order = 0;
   // By default we mark this configuration valid for promoting it to an overlay.
   bool is_overlay_candidate = true;
 };
 
+struct OverlayCheckReturn_Params {
+  OverlayCheckReturn_Params() = default;
+  OverlayCheckReturn_Params(const OverlayCheckReturn_Params& other) = default;
+  ~OverlayCheckReturn_Params() = default;
+
+  enum Status { Pending, Able, Not, Last = Not };

[dnicoara, 2017/06/02 21:31:25]

Enum constants should be ALL_CAPS.

[dshwang, 2017/06/02 23:59:00]

Done.

+  Status status = Status::Pending;
+};
+
 }  // namespace ui
 
 #endif  // UI_OZONE_COMMON_GPU_OZONE_GPU_MESSAGE_PARAMS_H_