downloads: clicking "remove" on chrome://downloads should also hide shelf item.

chrome/browser/ui/browser.cc

 // 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.
 
 #include "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // defined(OS_WIN)
@@ skipping 1321 matching lines @@
           TabStripModel::kNoTab &&
       !download->IsSavePackageDownload()) {
     CloseContents(source);
   }
 
   // Some (app downloads) are not supposed to appear on the shelf.
   if (!DownloadItemModel(download).ShouldShowInShelf())
     return;
 
   // GetDownloadShelf creates the download shelf if it was not yet created.
-  DownloadShelf* shelf = window()->GetDownloadShelf();
-  shelf->AddDownload(download);
+  window()->GetDownloadShelf()->AddDownload(download);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, content::WebContentsDelegate implementation:
 
 WebContents* Browser::OpenURLFromTab(WebContents* source,
                                      const OpenURLParams& params) {
   chrome::NavigateParams nav_params(this, params.url, params.transition);
   FillNavigateParamsFromOpenURLParams(&nav_params, params);
   nav_params.source_contents = source;
@@ skipping 1184 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         ui::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }