Add missing using statements for JNI types.

chrome/browser/signin/oauth2_token_service_delegate_android.cc

 // 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.
 
 #include "chrome/browser/signin/oauth2_token_service_delegate_android.h"
 
 #include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
 #include "chrome/browser/profiles/profile_android.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/sync/profile_sync_service_android.h"
 #include "components/signin/core/browser/account_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 #include "google_apis/gaia/oauth2_access_token_fetcher.h"
 #include "jni/OAuth2TokenService_jni.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 using content::BrowserThread;
 
 namespace {
 
 // Callback from FetchOAuth2TokenWithUsername().
 // Arguments:
 // - the error, or NONE if the token fetch was successful.
 // - the OAuth2 access token.
 // - the expiry time of the token (may be null, indicating that the expiry
@@ skipping 530 matching lines @@
               : isTransientError
                     ? GoogleServiceAuthError::CONNECTION_FAILED
                     : GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS);
   heap_callback->Run(err, token, base::Time());
 }
 
 // static
 bool OAuth2TokenServiceDelegateAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }