Add missing using statements for JNI types.

chrome/browser/android/browsing_data/url_filter_bridge.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/android/browsing_data/url_filter_bridge.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "jni/UrlFilterBridge_jni.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+
 UrlFilterBridge::UrlFilterBridge(
     const base::Callback<bool(const GURL&)>& url_filter)
     : url_filter_(url_filter),
       j_bridge_(Java_UrlFilterBridge_create(
           base::android::AttachCurrentThread(),
           reinterpret_cast<uintptr_t>(this))) {}
 
 UrlFilterBridge::~UrlFilterBridge() {}
 
 void UrlFilterBridge::Destroy(JNIEnv* env,
                               const JavaParamRef<jobject>& obj) {
   delete this;
 }
 
 bool UrlFilterBridge::MatchesUrl(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,
     const JavaParamRef<jstring>& jurl) const {
   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
   return url_filter_.Run(url);
 }
 
 // static
 bool UrlFilterBridge::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }