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

content/common/gpu/media/vt_video_decode_accelerator_mac.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 <algorithm>
 
 #include <CoreVideo/CoreVideo.h>
 #include <OpenGL/CGLIOSurface.h>
 #include <OpenGL/gl.h>
 #include <stddef.h>
@@ skipping 232 matching lines @@
     CMTime presentation_time_stamp,
     CMTime presentation_duration) {
   VTVideoDecodeAccelerator* vda =
       reinterpret_cast<VTVideoDecodeAccelerator*>(decompression_output_refcon);
   vda->Output(source_frame_refcon, status, image_buffer);
 }
 
 VTVideoDecodeAccelerator::Task::Task(TaskType type) : type(type) {
 }
 
+VTVideoDecodeAccelerator::Task::Task(const Task& other) = default;
+
 VTVideoDecodeAccelerator::Task::~Task() {
 }
 
 VTVideoDecodeAccelerator::Frame::Frame(int32_t bitstream_id)
     : bitstream_id(bitstream_id),
       pic_order_cnt(0),
       is_idr(false),
       reorder_window(0) {
 }
 
@@ skipping 880 matching lines @@
     SupportedProfile profile;
     profile.profile = supported_profile;
     profile.min_resolution.SetSize(16, 16);
     profile.max_resolution.SetSize(4096, 2160);
     profiles.push_back(profile);
   }
   return profiles;
 }
 
 }  // namespace content