[MD History] Run MD History on chrome://chrome/history.

chrome/browser/browser_about_handler.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/browser_about_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 69 matching lines @@
 #endif  // defined(ENABLE_EXTENSIONS)
   // Redirect chrome://history.
   } else if (host == chrome::kChromeUIHistoryHost) {
 #if defined(OS_ANDROID)
     // On Android, redirect directly to chrome://history-frame since
     // uber page is unsupported.
     host = chrome::kChromeUIHistoryFrameHost;
 #else
     // Material design history is handled on the top-level chrome://history
     // host.
-    if (MdHistoryUI::IsEnabled(Profile::FromBrowserContext(browser_context))) {
-      host = chrome::kChromeUIHistoryHost;
-      path = url->path();
-    } else {
-      host = chrome::kChromeUIUberHost;
-      path = chrome::kChromeUIHistoryHost + url->path();
-    }
+    host = chrome::kChromeUIUberHost;
+    path = chrome::kChromeUIHistoryHost + url->path();
 #endif
   // Redirect chrome://settings, unless MD settings is enabled.
   } else if (host == chrome::kChromeUISettingsHost) {
     if (base::FeatureList::IsEnabled(features::kMaterialDesignSettings)) {
       return true;  // Prevent further rewriting - this is a valid URL.
     } else if (::switches::AboutInSettingsEnabled()) {
       host = chrome::kChromeUISettingsFrameHost;
     } else {
       host = chrome::kChromeUIUberHost;
       path = chrome::kChromeUISettingsHost + url->path();
@@ skipping 33 matching lines @@
         FROM_HERE, base::Bind(&chrome::AttemptRestart));
     return true;
   } else if (base::LowerCaseEqualsASCII(spec, chrome::kChromeUIQuitURL)) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(&chrome::AttemptExit));
     return true;
   }
 
   return false;
 }