Show special string in SignInPreference summary when signin is disabled

chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.preferences;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
@@ skipping 92 matching lines @@
             @Override
             public boolean onPreferenceClick(Preference preference) {
                 return AccountSigninActivity.startIfAllowed(
                         getContext(), SigninAccessPoint.SETTINGS);
             }
         });
     }
 
     private void setupSigninDisabled() {
         setTitle(R.string.sign_in_to_chrome);
-        setSummary(R.string.sign_in_to_chrome_summary);
+        setSummary(R.string.sign_in_to_chrome_disabled_summary);
         setFragment(null);
         setIcon(ManagedPreferencesUtils.getManagedByEnterpriseIconId());
         setWidgetLayoutResource(0);
         setViewEnabled(false);
     }
 
     private void setupNotSignedIn() {
         setTitle(R.string.sign_in_to_chrome);
         setSummary(R.string.sign_in_to_chrome_summary);
         setFragment(null);
@@ skipping 66 matching lines @@
         AccountManagementFragment.updateUserNamePictureCache(accountId, fullName, bitmap);
         update();
     }
 
     // AndroidSyncSettings.AndroidSyncSettingsObserver
     @Override
     public void androidSyncSettingsChanged() {
         update();
     }
 }