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

components/omnibox/browser/omnibox_edit_model.h

 // Copyright 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 COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 #define COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
@@ skipping 45 matching lines @@
   struct State {
     State(bool user_input_in_progress,
           const base::string16& user_text,
           const base::string16& gray_text,
           const base::string16& keyword,
           bool is_keyword_hint,
           bool url_replacement_enabled,
           OmniboxFocusState focus_state,
           FocusSource focus_source,
           const AutocompleteInput& autocomplete_input);
+    State(const State& other);
     ~State();
 
     bool user_input_in_progress;
     const base::string16 user_text;
     const base::string16 gray_text;
     const base::string16 keyword;
     const bool is_keyword_hint;
     bool url_replacement_enabled;
     OmniboxFocusState focus_state;
     FocusSource focus_source;
@@ skipping 482 matching lines @@
 
   // The input that was sent to the AutocompleteController. Since no
   // autocomplete query is started after a tab switch, it is possible for this
   // |input_| to differ from the one currently stored in AutocompleteController.
   AutocompleteInput input_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxEditModel);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_