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

ui/ozone/platform/drm/gpu/hardware_display_plane_manager.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_HARDWARE_DISPLAY_PLANE_MANAGER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_PLANE_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
@@ skipping 20 matching lines @@
   HardwareDisplayPlaneList();
   ~HardwareDisplayPlaneList();
 
   // This is the list of planes to be committed this time.
   std::vector<HardwareDisplayPlane*> plane_list;
   // This is the list of planes that was committed last time.
   std::vector<HardwareDisplayPlane*> old_plane_list;
 
   struct PageFlipInfo {
     PageFlipInfo(uint32_t crtc_id, uint32_t framebuffer, CrtcController* crtc);
+    PageFlipInfo(const PageFlipInfo& other);
     ~PageFlipInfo();
 
     uint32_t crtc_id;
     uint32_t framebuffer;
     CrtcController* crtc;
 
     struct Plane {
       Plane(int plane,
             int framebuffer,
             const gfx::Rect& bounds,
@@ skipping 90 matching lines @@
   std::vector<scoped_ptr<HardwareDisplayPlane>> planes_;
   std::vector<uint32_t> crtcs_;
   std::vector<uint32_t> supported_formats_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayPlaneManager);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_PLANE_MANAGER_H_