MD History: re-use history host constant from content/ instead of duplicating to chrome/

chrome/browser/android/ntp/new_tab_page_url_handler.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/android/ntp/new_tab_page_url_handler.h"
 
 #include <string>
 
 #include "base/strings/string_util.h"
 #include "chrome/browser/android/chrome_feature_list.h"
@@ skipping 18 matching lines @@
     if (url->host() == chrome::kChromeUINewTabHost ||
         url->host() == kLegacyWelcomeHost) {
       *url = GURL(chrome::kChromeUINativeNewTabURL);
       return true;
     }
 
     // TODO(twellington): stop redirecting chrome://history to
     // chrome-native://history when M57 is a distant memory.
     // See http://crbug.com/654071.
     if (base::FeatureList::IsEnabled(features::kNativeAndroidHistoryManager) &&
-        (url->host() == kChromeUIHistoryHost ||
-            url->host() == kChromeUIHistoryFrameHost)) {
+        (url->host() == content::kChromeUIHistoryHost ||
+         url->host() == kChromeUIHistoryFrameHost)) {
       *url = GURL(content::kChromeUINativeHistoryURL);
       return true;
     }
 
     if (url->host() == kChromeUIPhysicalWebDiagnosticsHost) {
       *url = GURL(kChromeUINativePhysicalWebDiagnosticsURL);
       return true;
     }
   }
 
   if (url->SchemeIs(chrome::kChromeNativeScheme) &&
       url->host() == kChromeUIBookmarksHost) {
     std::string ref = url->ref();
     if (!ref.empty()) {
       *url = GURL(std::string(kChromeUINativeBookmarksURL)
                       .append(kBookmarkFolderPath)
                       .append(ref));
       return true;
     }
   }
 
   return false;
 }
 
 }  // namespace android
 }  // namespace chrome