Add missing using statements for JNI types.

chrome/browser/net/spdyproxy/data_reduction_promo_infobar_delegate_android.cc

 // Copyright 2016 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/net/spdyproxy/data_reduction_promo_infobar_delegate_android.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/DataReductionPromoInfoBarDelegate_jni.h"
 #include "ui/base/l10n/l10n_util.h"
 
+using base::android::JavaParamRef;
+
 // static
 void DataReductionPromoInfoBarDelegateAndroid::Create(
     content::WebContents* web_contents) {
   InfoBarService* infobar_service =
       InfoBarService::FromWebContents(web_contents);
   infobar_service->AddInfoBar(
       DataReductionPromoInfoBarDelegateAndroid::CreateInfoBar(
           infobar_service,
           base::MakeUnique<DataReductionPromoInfoBarDelegateAndroid>()));
 }
@@ skipping 42 matching lines @@
   Java_DataReductionPromoInfoBarDelegate_accept(env);
   return true;
 }
 
 // JNI for DataReductionPromoInfoBarDelegate.
 void Launch(JNIEnv* env,
             const JavaParamRef<jclass>& clazz,
             const JavaParamRef<jobject>& jweb_contents) {
   DataReductionPromoInfoBarDelegateAndroid::Launch(env, clazz, jweb_contents);
 }