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

gpu/command_buffer/service/context_state.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/context_state.h"
 
 #include <stddef.h>
 
 #include <cmath>
 
@@ skipping 69 matching lines @@
     return buffer->service_id();
   return 0;
 }
 
 }  // anonymous namespace.
 
 TextureUnit::TextureUnit()
     : bind_target(GL_TEXTURE_2D) {
 }
 
+TextureUnit::TextureUnit(const TextureUnit& other) = default;
+
 TextureUnit::~TextureUnit() {
 }
 
 bool Vec4::Equal(const Vec4& other) const {
   if (type_ != other.type_)
     return false;
   switch (type_) {
     case kFloat:
       for (size_t ii = 0; ii < 4; ++ii) {
         if (v_[ii].float_value != other.v_[ii].float_value)
@@ skipping 526 matching lines @@
   UpdateUnpackParameters();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/context_state_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu