Change chrome-ui to chrome. I didn't go too far in converting existing string...

chrome/browser/tab_contents/render_view_context_menu.cc

 // Copyright (c) 2006-2008 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/tab_contents/render_view_context_menu.h"
 
 #include "base/clipboard.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/scoped_clipboard_writer.h"
@@ skipping 221 matching lines @@
 
     case IDS_CONTENT_CONTEXT_SAVEIMAGEAS:
       return params_.image_url.is_valid() &&
              URLRequest::IsHandledURL(params_.image_url);
 
     case IDS_CONTENT_CONTEXT_OPENIMAGENEWTAB:
       // The images shown in the most visited thumbnails do not currently open
       // in a new tab as they should. Disabling this context menu option for
       // now, as a quick hack, before we resolve this issue (Issue = 2608).
       // TODO (sidchat): Enable this option once this issue is resolved.
-      if (params_.image_url.scheme() == "chrome-ui")
+      if (params_.image_url.scheme() == chrome::kChromeUIScheme)
         return false;
       return true;
 
     case IDS_CONTENT_CONTEXT_COPYIMAGELOCATION:
       return params_.image_url.is_valid();
 
     case IDS_CONTENT_CONTEXT_SAVEPAGEAS:
       return SavePackage::IsSavableURL(source_tab_contents_->GetURL());
 
     case IDS_CONTENT_CONTEXT_OPENFRAMENEWTAB:
@@ skipping 402 matching lines @@
   ScopedClipboardWriter scw(clipboard);
   scw.WriteText(text);
 }
 
 void RenderViewContextMenu::WriteURLToClipboard(const GURL& url) {
   if (url.SchemeIs(chrome::kMailToScheme))
     WriteTextToClipboard(UTF8ToUTF16(url.path()));
   else
     WriteTextToClipboard(UTF8ToUTF16(url.spec()));
 }