Add missing using statements for JNI types.

chrome/browser/android/feature_utilities.cc

 // Copyright 2014 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/android/feature_utilities.h"
 
 #include "jni/FeatureUtilities_jni.h"
 
+using base::android::JavaParamRef;
+
 namespace {
 bool document_mode_enabled = false;
 bool custom_tab_visible = false;
 bool is_in_multi_window_mode = false;
 } // namespace
 
 namespace chrome {
 namespace android {
 
 RunningModeHistogram GetDocumentModeValue() {
@@ skipping 27 matching lines @@
 
 static void SetIsInMultiWindowMode(JNIEnv* env,
                                    const JavaParamRef<jclass>& clazz,
                                    jboolean j_is_in_multi_window_mode) {
   is_in_multi_window_mode = j_is_in_multi_window_mode;
 }
 
 bool RegisterFeatureUtilities(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }