Correct const accessors in base/values.(h|cc)

chrome/browser/extensions/extension_web_ui.cc

 // Copyright (c) 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/extensions/extension_web_ui.h"
 
 #include <set>
 #include <vector>
 
 #include "base/string_util.h"
@@ skipping 206 matching lines @@
 // static
 bool ExtensionWebUI::HandleChromeURLOverride(
     GURL* url, content::BrowserContext* browser_context) {
   if (!url->SchemeIs(chrome::kChromeUIScheme))
     return false;
 
   Profile* profile = Profile::FromBrowserContext(browser_context);
   const DictionaryValue* overrides =
       profile->GetPrefs()->GetDictionary(kExtensionURLOverrides);
   std::string page = url->host();
-  ListValue* url_list;
+  const ListValue* url_list;
   if (!overrides || !overrides->GetList(page, &url_list))
     return false;
 
   ExtensionService* service = profile->GetExtensionService();
 
   size_t i = 0;
   while (i < url_list->GetSize()) {
     Value* val = NULL;
     url_list->Get(i, &val);
 
@@ skipping 52 matching lines @@
   const DictionaryValue* overrides =
       profile->GetPrefs()->GetDictionary(kExtensionURLOverrides);
   if (!overrides)
     return false;
 
   // Find the reverse mapping based on the given URL. For example this maps the
   // internal URL chrome-extension://eemcgdkndhakfknomggombfjeno/main.html#1 to
   // chrome://bookmarks/#1 for display in the omnibox.
   for (DictionaryValue::key_iterator it = overrides->begin_keys(),
        end = overrides->end_keys(); it != end; ++it) {
-    ListValue* url_list;
+    const ListValue* url_list;
     if (!overrides->GetList(*it, &url_list))
       continue;
 
     for (ListValue::const_iterator it2 = url_list->begin(),
          end2 = url_list->end(); it2 != end2; ++it2) {
       std::string override;
       if (!(*it2)->GetAsString(&override))
         continue;
       if (StartsWithASCII(url->spec(), override, true)) {
         GURL original_url(chrome::kChromeUIScheme + std::string("://") + *it +
@@ skipping 109 matching lines @@
 }
 
 // static
 void ExtensionWebUI::GetFaviconForURL(Profile* profile,
     FaviconService::GetFaviconRequest* request, const GURL& page_url) {
   // tracker deletes itself when done.
   ExtensionWebUIImageLoadingTracker* tracker =
       new ExtensionWebUIImageLoadingTracker(profile, request, page_url);
   tracker->Init();
 }