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

chrome/browser/search/suggestions/image_fetcher_impl.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 "chrome/browser/search/suggestions/image_fetcher_impl.h"
 
 #include <string>
 
 #include "content/public/browser/browser_thread.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace suggestions {
 
 ImageFetcherImpl::ImageFetcherImpl(
     net::URLRequestContextGetter* url_request_context)
     : delegate_(NULL), url_request_context_(url_request_context) {}
 
 ImageFetcherImpl::~ImageFetcherImpl() {}
 
 ImageFetcherImpl::ImageRequest::ImageRequest() : fetcher(NULL) {}
 
 ImageFetcherImpl::ImageRequest::ImageRequest(chrome::BitmapFetcher* f)
     : fetcher(f) {}
 
+ImageFetcherImpl::ImageRequest::ImageRequest(const ImageRequest& other) =
+    default;
+
 ImageFetcherImpl::ImageRequest::~ImageRequest() { delete fetcher; }
 
 void ImageFetcherImpl::SetImageFetcherDelegate(ImageFetcherDelegate* delegate) {
   DCHECK(delegate);
   delegate_ = delegate;
 }
 
 void ImageFetcherImpl::StartOrQueueNetworkRequest(
     const GURL& url, const GURL& image_url,
     base::Callback<void(const GURL&, const SkBitmap*)> callback) {
@@ skipping 36 matching lines @@
   // Inform the ImageFetcherDelegate.
   if (delegate_) {
     delegate_->OnImageFetched(request->url, bitmap);
   }
 
   // Erase the completed ImageRequest.
   pending_net_requests_.erase(image_iter);
 }
 
 }  // namespace suggestions