Reland "Android: Remove GetApplicationContext part 2"

chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.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.ntp;
 
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.graphics.Bitmap;
 
@@ skipping 362 matching lines @@
             @Override
             public void run() {
                 if (mIsDestroyed) return;
                 updateForeignSessions();
                 postUpdate();
             }
         });
     }
 
     public boolean isSignedIn() {
-        return ChromeSigninController.get(mContext).isSignedIn();
+        return ChromeSigninController.get().isSignedIn();
     }
 
     @VisibleForTesting
     public static void setRecentlyClosedTabManagerForTests(RecentlyClosedTabManager manager) {
         sRecentlyClosedTabManagerForTests = manager;
     }
 }