Revert of Android: Remove GetApplicationContext part 2

components/sync/android/java/src/org/chromium/components/sync/AndroidSyncSettings.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.components.sync;
 
 import android.accounts.Account;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.SyncStatusObserver;
@@ skipping 75 matching lines @@
     /**
      * @param context the context the ApplicationContext will be retrieved from.
      * @param syncContentResolverDelegate an implementation of {@link SyncContentResolverDelegate}.
      */
     private AndroidSyncSettings(
             Context context, SyncContentResolverDelegate syncContentResolverDelegate) {
         mApplicationContext = context.getApplicationContext();
         mSyncContentResolverDelegate = syncContentResolverDelegate;
         mContractAuthority = getContractAuthority();
 
-        mAccount = ChromeSigninController.get().getSignedInUser();
+        mAccount = ChromeSigninController.get(context).getSignedInUser();
         updateSyncability();
         updateCachedSettings();
 
         mSyncContentResolverDelegate.addStatusChangeListener(
                 ContentResolver.SYNC_OBSERVER_TYPE_SETTINGS,
                 new AndroidSyncSettingsChangedObserver());
     }
 
     /**
      * Checks whether sync is currently enabled from Chrome for the currently signed in account.
@@ skipping 117 matching lines @@
         // Make account syncable if there is one.
         if (shouldBeSyncable) {
             mSyncContentResolverDelegate.setIsSyncable(mAccount, mContractAuthority, 1);
             // This reduces unnecessary resource usage. See http://crbug.com/480688 for details.
             mSyncContentResolverDelegate.removePeriodicSync(
                     mAccount, mContractAuthority, Bundle.EMPTY);
         }
         StrictMode.setThreadPolicy(oldPolicy);
 
         // Disable the syncability of Chrome for all other accounts.
-        AccountManagerHelper.get().getGoogleAccounts(new Callback<Account[]>() {
+        AccountManagerHelper.get(mApplicationContext).getGoogleAccounts(new Callback<Account[]>() {
             @Override
             public void onResult(Account[] accounts) {
                 StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskWrites();
                 for (Account account : accounts) {
                     if (!account.equals(mAccount)
                             && mSyncContentResolverDelegate.getIsSyncable(
                                        account, mContractAuthority)
                                     > 0) {
                         mSyncContentResolverDelegate.setIsSyncable(account, mContractAuthority, 0);
                     }
@@ skipping 53 matching lines @@
     private void notifyObservers() {
         for (AndroidSyncSettingsObserver observer : mObservers) {
             observer.androidSyncSettingsChanged();
         }
     }
 
     private String getContractAuthority() {
         return mApplicationContext.getPackageName();
     }
 }