Add missing using statements for JNI types.

base/message_loop/message_pump_android.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 "base/message_loop/message_pump_android.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/run_loop.h"
 #include "base/time/time.h"
 #include "jni/SystemMessageHandler_jni.h"
 
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 
 // ----------------------------------------------------------------------------
 // Native JNI methods called by Java.
 // ----------------------------------------------------------------------------
 // This method can not move to anonymous namespace as it has been declared as
 // 'static' in system_message_handler_jni.h.
 static void DoRunLoopOnce(JNIEnv* env,
                           const JavaParamRef<jobject>& obj,
                           jlong native_delegate,
@@ skipping 128 matching lines @@
       system_message_handler_obj_.obj(),
       delayed_work_time.ToInternalValue(), millis);
 }
 
 // static
 bool MessagePumpForUI::RegisterBindings(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace base