Move JNI annotations to annotations package.

chrome/android/java/src/org/chromium/chrome/browser/childaccounts/ChildAccountService.java

 // 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.
 
 package org.chromium.chrome.browser.childaccounts;
 
 import android.accounts.Account;
 import android.accounts.AccountManagerCallback;
 import android.accounts.AccountManagerFuture;
 import android.accounts.AuthenticatorException;
 import android.accounts.OperationCanceledException;
 import android.content.Context;
 import android.content.Intent;
 
-import org.chromium.base.CalledByNative;
 import org.chromium.base.CommandLine;
 import org.chromium.base.Log;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
 import org.chromium.base.VisibleForTesting;
+import org.chromium.base.annotations.CalledByNative;
 import org.chromium.chrome.browser.ChromeSwitches;
 import org.chromium.chrome.browser.services.AccountsChangedReceiver;
 import org.chromium.chrome.browser.signin.SigninManager;
 import org.chromium.sync.signin.AccountManagerHelper;
 import org.chromium.sync.signin.ChromeSigninController;
 
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Timer;
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     /**
      * Returns the previously determined value of whether there is a child account on the device.
      * Can be overridden by subclasses to avoid native calls in testing.
      *
      * @return The previously determined value of whether there is a child account on the device.
      */
     protected native boolean nativeGetIsChildAccount();
 
     private native void nativeSetIsChildAccount(boolean isChild);
 }