[Remoting Android] Fix crash caused by fetchAuthToken()

remoting/android/java/src/org/chromium/chromoting/jni/JniInterface.java

 // Copyright 2013 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.chromoting.jni;
 
 import android.content.Context;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
@@ skipping 41 matching lines @@
         sAccount = account;
         fetchAuthToken();
     }
 
     /**
      * Fetch the OAuth token and feed it to the native interface.
      */
     @CalledByNative
     private static void fetchAuthToken() {
         if (sAccount == null) {
-            throw new IllegalStateException("Account is not set before fetching the auth token.");
+            Log.w(TAG, "Account is not set before fetching the auth token.");

[Sergey Ulanov, 2017/03/21 18:39:37]

Maybe add a comment here to explain why we can ignore this request.

[Yuwei, 2017/03/21 19:02:24]

Done.

+            return;
         }
         sLoggerTokenConsumer.consume(sAccount, new OAuthTokenFetcher.Callback() {
             @Override
             public void onTokenFetched(String token) {
                 nativeOnAuthTokenFetched(token);
             }
 
             @Override
             public void onError(OAuthTokenFetcher.Error error) {
                 Log.e(TAG, "Failed to fetch auth token for native client.");
             }
         });
     }
 
     /** Performs the native portion of the initialization. */
     private static native void nativeLoadNative();
 
     /** Notifies the native client with the new auth token */
     private static native void nativeOnAuthTokenFetched(String token);
 }