Add missing using statements for JNI types.

chrome/browser/ui/android/autofill/credit_card_scanner_view_android.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/ui/android/autofill/credit_card_scanner_view_android.h"
 
 #include <memory>
 
 #include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/ui/android/view_android_helper.h"
 #include "chrome/browser/ui/autofill/credit_card_scanner_view_delegate.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "jni/CreditCardScanner_jni.h"
 #include "ui/android/view_android.h"
 #include "ui/android/window_android.h"
 
+using base::android::JavaParamRef;
+
 namespace autofill {
 
 // static
 bool CreditCardScannerView::CanShow() {
   JNIEnv* env = base::android::AttachCurrentThread();
   base::android::ScopedJavaGlobalRef<jobject> java_object(
       Java_CreditCardScanner_create(
           env, 0, base::android::GetApplicationContext(), 0));
   return Java_CreditCardScanner_canScan(env, java_object.obj());
 }
@@ skipping 40 matching lines @@
       base::android::ConvertJavaStringToUTF16(env, card_number),
       static_cast<int>(expiration_month), static_cast<int>(expiration_year));
 }
 
 void CreditCardScannerViewAndroid::Show() {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_CreditCardScanner_scan(env, java_object_.obj());
 }
 
 }  // namespace autofill