Add missing using statements for JNI types.

chrome/browser/dom_distiller/tab_utils_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/dom_distiller/tab_utils_android.h"
 
 #include <string>
 
 #include "base/android/jni_string.h"
 #include "chrome/browser/dom_distiller/tab_utils.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/dom_distiller/core/experiments.h"
 #include "components/url_formatter/url_formatter.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_constants.h"
 #include "jni/DomDistillerTabUtils_jni.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+
 namespace android {
 
 void DistillCurrentPageAndView(JNIEnv* env,
                                const JavaParamRef<jclass>& clazz,
                                const JavaParamRef<jobject>& j_web_contents) {
   content::WebContents* web_contents =
       content::WebContents::FromJavaWebContents(j_web_contents);
   ::DistillCurrentPageAndView(web_contents);
 }
 
@@ skipping 33 matching lines @@
                                     const JavaParamRef<jclass>& clazz) {
   return dom_distiller::GetDistillerHeuristicsType()
       != dom_distiller::DistillerHeuristicsType::NONE;
 }
 
 }  // namespace android
 
 bool RegisterDomDistillerTabUtils(JNIEnv* env) {
   return android::RegisterNativesImpl(env);
 }