ui: Add out-of-line copy ctors for complex classes.

ui/ozone/platform/drm/gpu/overlay_plane.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_PLATFORM_DRM_GPU_OVERLAY_PLANE_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_OVERLAY_PLANE_H_
 
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 11 matching lines @@
 
 struct OverlayPlane {
   // Simpler constructor for the primary plane.
   explicit OverlayPlane(const scoped_refptr<ScanoutBuffer>& buffer);
 
   OverlayPlane(const scoped_refptr<ScanoutBuffer>& buffer,
                int z_order,
                gfx::OverlayTransform plane_transform,
                const gfx::Rect& display_bounds,
                const gfx::RectF& crop_rect);
+  OverlayPlane(const OverlayPlane& other);
 
   // This represents a callback function which can handle post processing
   // operations like scaling, format conversion etc of the buffer bound to this
   // plane and return the processed buffer.
   typedef base::Callback<scoped_refptr<ScanoutBuffer>(const gfx::Size& size,
                                                       uint32_t format)>
       ProcessBufferCallback;
   OverlayPlane(const scoped_refptr<ScanoutBuffer>& buffer,
                int z_order,
                gfx::OverlayTransform plane_transform,
@@ skipping 12 matching lines @@
   int z_order = 0;
   gfx::OverlayTransform plane_transform;
   gfx::Rect display_bounds;
   gfx::RectF crop_rect;
   ProcessBufferCallback processing_callback;
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_OVERLAY_PLANE_H_