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

chrome/browser/search/suggestions/image_fetcher_impl.h

 // 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.
 
 #ifndef CHROME_BROWSER_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_
 #define CHROME_BROWSER_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_
 
 #include <map>
 #include <utility>
 #include <vector>
@@ skipping 32 matching lines @@
 
   typedef std::vector<base::Callback<void(const GURL&, const SkBitmap*)> >
       CallbackVector;
 
   // State related to an image fetch (associated website url, image_url,
   // fetcher, pending callbacks).
   struct ImageRequest {
     ImageRequest();
     // Struct takes ownership of |f|.
     explicit ImageRequest(chrome::BitmapFetcher* f);
+    ImageRequest(const ImageRequest& other);
     ~ImageRequest();
 
     void swap(ImageRequest* other) {
       std::swap(url, other->url);
       std::swap(image_url, other->image_url);
       std::swap(callbacks, other->callbacks);
       std::swap(fetcher, other->fetcher);
     }
 
     GURL url;
@@ skipping 13 matching lines @@
   ImageFetcherDelegate* delegate_;
 
   net::URLRequestContextGetter* url_request_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageFetcherImpl);
 };
 
 }  // namespace suggestions
 
 #endif  // CHROME_BROWSER_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_