Add missing using statements for JNI types.

android_webview/native/aw_settings.cc

 // Copyright (c) 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 "android_webview/native/aw_settings.h"
 
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "android_webview/browser/renderer_host/aw_render_view_host_ext.h"
 #include "android_webview/common/aw_content_client.h"
 #include "android_webview/native/aw_contents.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/macros.h"
 #include "base/supports_user_data.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/common/web_preferences.h"
 #include "jni/AwSettings_jni.h"
 #include "ui/gfx/font_render_params.h"
 
 using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 using content::RendererPreferences;
 using content::WebPreferences;
 
 namespace android_webview {
 
 namespace {
 
 void PopulateFixedRendererPreferences(RendererPreferences* prefs) {
   prefs->tap_multiple_targets_strategy =
@@ skipping 421 matching lines @@
     JNIEnv* env,
     const JavaParamRef<jclass>& clazz) {
   return base::android::ConvertUTF8ToJavaString(env, GetUserAgent());
 }
 
 bool RegisterAwSettings(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview