Replace "http" etc with the url_constants version. This was a previous TODO for webplugin_proxy....

content/browser/renderer_host/render_view_host.cc

 // Copyright (c) 2011 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 "content/browser/renderer_host/render_view_host.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 216 matching lines @@
     // favicon is displayed) happens synchronously. If the start loading
     // messages was asynchronous, then the default favicon would flash in.
     //
     // WebKit doesn't send throb notifications for JavaScript URLs, so we
     // don't want to either.
     if (!params.url.SchemeIs(chrome::kJavaScriptScheme))
       delegate_->DidStartLoading();
   }
   const GURL& url = params.url;
   if (!delegate_->IsExternalTabContainer() &&
-      (url.SchemeIs("http") || url.SchemeIs("https")))
+      (url.SchemeIs(chrome::kHttpScheme) || url.SchemeIs(chrome::kHttpsScheme)))
     chrome_browser_net::PreconnectUrlAndSubresources(url);
 }
 
 void RenderViewHost::NavigateToURL(const GURL& url) {
   ViewMsg_Navigate_Params params;
   params.page_id = -1;
   params.pending_history_list_offset = -1;
   params.current_history_list_offset = -1;
   params.current_history_list_length = 0;
   params.url = url;
@@ skipping 1013 matching lines @@
   if (view) {
     view->ShowPopupMenu(params.bounds,
                         params.item_height,
                         params.item_font_size,
                         params.selected_item,
                         params.popup_items,
                         params.right_aligned);
   }
 }
 #endif