Add missing using statements for JNI types.

content/browser/android/load_url_params.cc

 // Copyright (c) 2012 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 "content/browser/android/load_url_params.h"
 
 #include <jni.h>
 
 #include "base/android/jni_string.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/url_constants.h"
 #include "jni/LoadUrlParams_jni.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+
 namespace content {
 
 bool RegisterLoadUrlParams(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 jboolean IsDataScheme(JNIEnv* env,
                       const JavaParamRef<jclass>& clazz,
                       const JavaParamRef<jstring>& jurl) {
   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
   return url.SchemeIs(url::kDataScheme);
 }
 
 }  // namespace content