jni_generator: Pass object parameters as JavaParamRef.

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 "base/prefs/pref_service.h"
 #include "chrome/browser/dom_distiller/tab_utils.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/pref_names.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 "net/base/net_util.h"
 #include "url/gurl.h"
 
 namespace android {
 
 void DistillCurrentPageAndView(JNIEnv* env,
-                               jclass clazz,
-                               jobject j_web_contents) {
+                               const JavaParamRef<jclass>& clazz,
+                               const JavaParamRef<jobject>& j_web_contents) {
   content::WebContents* web_contents =
       content::WebContents::FromJavaWebContents(j_web_contents);
   ::DistillCurrentPageAndView(web_contents);
 }
 
 void DistillAndView(JNIEnv* env,
-                    jclass clazz,
-                    jobject j_source_web_contents,
-                    jobject j_destination_web_contents) {
+                    const JavaParamRef<jclass>& clazz,
+                    const JavaParamRef<jobject>& j_source_web_contents,
+                    const JavaParamRef<jobject>& j_destination_web_contents) {
   content::WebContents* source_web_contents =
       content::WebContents::FromJavaWebContents(j_source_web_contents);
   content::WebContents* destination_web_contents =
       content::WebContents::FromJavaWebContents(j_destination_web_contents);
   ::DistillAndView(source_web_contents, destination_web_contents);
 }
 
 ScopedJavaLocalRef<jstring> GetFormattedUrlFromOriginalDistillerUrl(
     JNIEnv* env,
-    jclass clazz,
-    jstring j_url) {
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jstring>& j_url) {
   GURL url(base::android::ConvertJavaStringToUTF8(env, j_url));
   Profile* profile = ProfileManager::GetLastUsedProfile();
   std::string languages;  // Empty if Profile cannot be retrieved.
   if (profile) {
     languages = profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
   }
 
   if (url.spec().length() > content::kMaxURLDisplayChars)
     url = url.IsStandard() ? url.GetOrigin() : GURL(url.scheme() + ":");
 
   // Note that we can't unescape spaces here, because if the user copies this
   // and pastes it into another program, that program may think the URL ends at
   // the space.
   return base::android::ConvertUTF16ToJavaString(
       env, url_formatter::FormatUrl(
                url, languages, url_formatter::kFormatUrlOmitAll,
                net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
 }
 
 }  // namespace android
 
 bool RegisterDomDistillerTabUtils(JNIEnv* env) {
   return android::RegisterNativesImpl(env);
 }