jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/download/chrome_download_delegate.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/android/download/chrome_download_delegate.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/android/download/android_download_manager_overwrite_infobar_delegate.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/download/download_extensions.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/android/download_controller_android.h"
 #include "jni/ChromeDownloadDelegate_jni.h"
 #include "ui/base/l10n/l10n_util.h"
 
 // Gets the download warning text for the given file name.
-static ScopedJavaLocalRef<jstring> GetDownloadWarningText(JNIEnv* env,
-                                                          jclass clazz,
-                                                          jstring filename) {
+static ScopedJavaLocalRef<jstring> GetDownloadWarningText(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jstring>& filename) {
   return base::android::ConvertUTF8ToJavaString(
       env, l10n_util::GetStringFUTF8(
                IDS_PROMPT_DANGEROUS_DOWNLOAD,
                base::android::ConvertJavaStringToUTF16(env, filename)));
 }
 
 // Returns true if a file name is dangerous, or false otherwise.
-static jboolean IsDownloadDangerous(
-    JNIEnv* env, jclass clazz, jstring filename) {
+static jboolean IsDownloadDangerous(JNIEnv* env,
+                                    const JavaParamRef<jclass>& clazz,
+                                    const JavaParamRef<jstring>& filename) {
   base::FilePath path(base::android::ConvertJavaStringToUTF8(env, filename));
   return download_util::GetFileDangerLevel(path) !=
       download_util::NOT_DANGEROUS;
 }
 
 // Called when a dangerous download is validated.
-static void DangerousDownloadValidated(
-    JNIEnv* env, jclass clazz, jobject tab, jint download_id, jboolean accept) {
+static void DangerousDownloadValidated(JNIEnv* env,
+                                       const JavaParamRef<jclass>& clazz,
+                                       const JavaParamRef<jobject>& tab,
+                                       jint download_id,
+                                       jboolean accept) {
   TabAndroid* tab_android = TabAndroid::GetNativeTab(env, tab);
   content::DownloadControllerAndroid::Get()->DangerousDownloadValidated(
       tab_android->web_contents(), download_id, accept);
 }
 
 // static
 void ChromeDownloadDelegate::EnqueueDownloadManagerRequest(
     jobject chrome_download_delegate,
     bool overwrite,
     jobject download_info) {
   JNIEnv* env = base::android::AttachCurrentThread();
 
   Java_ChromeDownloadDelegate_enqueueDownloadManagerRequestFromNative(
       env, chrome_download_delegate, overwrite, download_info);
 }
 
 // Called when we need to interrupt download and ask users whether to overwrite
 // an existing file.
-static void LaunchDownloadOverwriteInfoBar(JNIEnv* env,
-                                           jclass clazz,
-                                           jobject delegate,
-                                           jobject tab,
-                                           jobject download_info,
-                                           jstring jfile_name,
-                                           jstring jdir_name,
-                                           jstring jdir_full_path) {
+static void LaunchDownloadOverwriteInfoBar(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& delegate,
+    const JavaParamRef<jobject>& tab,
+    const JavaParamRef<jobject>& download_info,
+    const JavaParamRef<jstring>& jfile_name,
+    const JavaParamRef<jstring>& jdir_name,
+    const JavaParamRef<jstring>& jdir_full_path) {
   TabAndroid* tab_android = TabAndroid::GetNativeTab(env, tab);
 
   std::string file_name =
       base::android::ConvertJavaStringToUTF8(env, jfile_name);
   std::string dir_name = base::android::ConvertJavaStringToUTF8(env, jdir_name);
   std::string dir_full_path =
       base::android::ConvertJavaStringToUTF8(env, jdir_full_path);
 
   chrome::android::AndroidDownloadManagerOverwriteInfoBarDelegate::Create(
       InfoBarService::FromWebContents(tab_android->web_contents()), file_name,
       dir_name, dir_full_path, delegate, download_info);
 }
 
 bool RegisterChromeDownloadDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }