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

ui/ozone/platform/drm/gpu/hardware_display_plane_manager.cc

 // 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.
 
 #include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager.h"
 
 #include <drm_fourcc.h>
 
 #include <set>
 #include <utility>
@@ skipping 18 matching lines @@
 
 HardwareDisplayPlaneList::~HardwareDisplayPlaneList() {
 }
 
 HardwareDisplayPlaneList::PageFlipInfo::PageFlipInfo(uint32_t crtc_id,
                                                      uint32_t framebuffer,
                                                      CrtcController* crtc)
     : crtc_id(crtc_id), framebuffer(framebuffer), crtc(crtc) {
 }
 
+HardwareDisplayPlaneList::PageFlipInfo::PageFlipInfo(
+    const PageFlipInfo& other) = default;
+
 HardwareDisplayPlaneList::PageFlipInfo::~PageFlipInfo() {
 }
 
 HardwareDisplayPlaneList::PageFlipInfo::Plane::Plane(int plane,
                                                      int framebuffer,
                                                      const gfx::Rect& bounds,
                                                      const gfx::Rect& src_rect)
     : plane(plane),
       framebuffer(framebuffer),
       bounds(bounds),
@@ skipping 274 matching lines @@
       break;
     } else {
       plane_z_order++;
     }
   }
 
   return format_supported;
 }
 
 }  // namespace ui