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

chrome/common/extensions/api/input_ime/input_components_handler.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_API_INPUT_IME_INPUT_COMPONENTS_HANDLER_H_
 #define CHROME_COMMON_EXTENSIONS_API_INPUT_IME_INPUT_COMPONENTS_HANDLER_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest_handler.h"
 #include "url/gurl.h"
 
 namespace extensions {
 
 class Extension;
 
 enum InputComponentType {
   INPUT_COMPONENT_TYPE_NONE = -1,
   INPUT_COMPONENT_TYPE_IME,
   INPUT_COMPONENT_TYPE_COUNT
 };
 
 struct InputComponentInfo {
   // Define out of line constructor/destructor to please Clang.
   InputComponentInfo();
+  InputComponentInfo(const InputComponentInfo& other);
   ~InputComponentInfo();
 
   std::string name;
   InputComponentType type;
   std::string id;
   std::string description;
   std::set<std::string> languages;
   std::set<std::string> layouts;
   std::string shortcut_keycode;
   bool shortcut_alt;
@@ skipping 28 matching lines @@
 
  private:
   const std::vector<std::string> Keys() const override;
 
   DISALLOW_COPY_AND_ASSIGN(InputComponentsHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_API_INPUT_IME_INPUT_COMPONENTS_HANDLER_H_