Add missing using statements for JNI types.

chrome/browser/ui/android/certificate_viewer_android.cc

 // Copyright 2015 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/certificate_viewer_android.h"
 
 #include "base/android/jni_string.h"
 #include "base/logging.h"
 #include "chrome/grit/generated_resources.h"
 #include "jni/CertificateViewer_jni.h"
 #include "net/cert/x509_certificate.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 
 void ShowCertificateViewer(content::WebContents* web_contents,
                            gfx::NativeWindow parent,
                            net::X509Certificate* cert) {
   // For Android, showing the certificate is always handled in Java.
   NOTREACHED();
 }
 
 static ScopedJavaLocalRef<jstring> GetCertIssuedToText(
@@ skipping 76 matching lines @@
 static ScopedJavaLocalRef<jstring> GetCertSHA1FingerprintText(
     JNIEnv* env,
     const JavaParamRef<jclass>&) {
   return ConvertUTF8ToJavaString(
       env, l10n_util::GetStringUTF8(IDS_CERT_INFO_SHA1_FINGERPRINT_LABEL));
 }
 
 bool RegisterCertificateViewer(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }