Add missing using statements for JNI types.

content/browser/android/tracing_controller_android.cc

 // Copyright 2013 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/tracing_controller_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "content/public/browser/tracing_controller.h"
 #include "jni/TracingControllerAndroid_jni.h"
 
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+
 namespace content {
 
 static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   TracingControllerAndroid* profiler = new TracingControllerAndroid(env, obj);
   return reinterpret_cast<intptr_t>(profiler);
 }
 
 TracingControllerAndroid::TracingControllerAndroid(JNIEnv* env, jobject obj)
     : weak_java_object_(env, obj),
       weak_factory_(this) {}
@@ skipping 87 matching lines @@
   base::trace_event::TraceConfig trace_config;
   return base::android::ConvertUTF8ToJavaString(
       env, trace_config.ToCategoryFilterString());
 }
 
 bool RegisterTracingControllerAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content