Add missing using statements for JNI types.

content/browser/android/child_process_launcher_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 "content/browser/android/child_process_launcher_android.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 12 matching lines @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "jni/ChildProcessLauncher_jni.h"
 #include "media/base/android/media_player_android.h"
 #include "ui/gl/android/surface_texture.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 using base::android::ToJavaArrayOfStrings;
 using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
 using content::StartChildProcessCallback;
 
 namespace content {
 
 namespace {
 
 // Pass a java surface object to the MediaPlayerAndroid object
@@ skipping 243 matching lines @@
 jboolean IsSingleProcess(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kSingleProcess);
 }
 
 bool RegisterChildProcessLauncher(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content