Add missing using statements for JNI types.

chrome/browser/media/android/router/media_router_android.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 "chrome/browser/media/android/router/media_router_android.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 11 matching lines @@
 #include "chrome/browser/media/router/media_sinks_observer.h"
 #include "chrome/browser/media/router/route_message.h"
 #include "chrome/browser/media/router/route_message_observer.h"
 #include "chrome/browser/media/router/route_request_result.h"
 #include "content/public/browser/browser_context.h"
 #include "jni/ChromeMediaRouter_jni.h"
 #include "url/gurl.h"
 
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ConvertJavaStringToUTF8;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 using base::android::AttachCurrentThread;
 
 namespace media_router {
 
 MediaRouterAndroid::MediaRouteRequest::MediaRouteRequest(
     const MediaSource& source,
     const std::string& presentation_id,
     const std::vector<MediaRouteResponseCallback>& callbacks)
     : media_source(source),
@@ skipping 438 matching lines @@
     return;
 
   std::vector<RouteMessage> messages(1);
   messages.front().type = RouteMessage::TEXT;
   messages.front().text = ConvertJavaStringToUTF8(env, jmessage);
   FOR_EACH_OBSERVER(RouteMessageObserver, *observer_list,
                     OnMessagesReceived(messages));
 }
 
 }  // namespace media_router