Add missing using statements for JNI types.

android_webview/native/aw_message_port_service_impl.cc

 // Copyright 2015 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 "android_webview/native/aw_message_port_service_impl.h"
 
 #include "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_message_port_message_filter.h"
 #include "android_webview/native/aw_contents.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/message_port_provider.h"
 #include "jni/AwMessagePortService_jni.h"
 
 namespace android_webview {
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertUTF16ToJavaString;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
 using base::android::ToJavaIntArray;
 using content::BrowserThread;
 using content::MessagePortProvider;
 
 // static
 AwMessagePortServiceImpl* AwMessagePortServiceImpl::GetInstance() {
   return static_cast<AwMessagePortServiceImpl*>(
       AwBrowserContext::GetDefault()->GetMessagePortService());
@@ skipping 205 matching lines @@
 }
 
 // static
 jlong InitAwMessagePortService(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   AwMessagePortServiceImpl* service = AwMessagePortServiceImpl::GetInstance();
   service->Init(env, obj);
   return reinterpret_cast<intptr_t>(service);
 }
 
 }  // namespace android_webview