Straighten up life cycle of native InfoBar pointers

chrome/browser/ui/android/infobars/download_overwrite_infobar.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/infobars/download_overwrite_infobar.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/jni_weak_ref.h"
@@ skipping 22 matching lines @@
   DownloadOverwriteInfoBarDelegate* delegate = GetDelegate();
 
   ScopedJavaLocalRef<jstring> j_file_name =
       base::android::ConvertUTF8ToJavaString(env, delegate->GetFileName());
   ScopedJavaLocalRef<jstring> j_dir_name =
       base::android::ConvertUTF8ToJavaString(env, delegate->GetDirName());
   ScopedJavaLocalRef<jstring> j_dir_full_path =
       base::android::ConvertUTF8ToJavaString(env, delegate->GetDirFullPath());
   base::android::ScopedJavaLocalRef<jobject> java_infobar(
       Java_DownloadOverwriteInfoBar_createInfoBar(
-          env, reinterpret_cast<intptr_t>(this), j_file_name.obj(),
-          j_dir_name.obj(), j_dir_full_path.obj()));
+          env, j_file_name.obj(), j_dir_name.obj(), j_dir_full_path.obj()));
   return java_infobar;
 }
 
 void DownloadOverwriteInfoBar::ProcessButton(int action,
                                              const std::string& action_value) {
   if (!owner())
     return;  // We're closing; don't call anything, it might access the owner.
 
   DownloadOverwriteInfoBarDelegate* delegate = GetDelegate();
   if (action == InfoBarAndroid::ACTION_OVERWRITE)
     delegate->OverwriteExistingFile();
   else if (action == InfoBarAndroid::ACTION_CREATE_NEW_FILE)
     delegate->CreateNewFile();
   else
     DCHECK(false);
 
   RemoveSelf();
 }
 
 DownloadOverwriteInfoBarDelegate* DownloadOverwriteInfoBar::GetDelegate() {
   return static_cast<DownloadOverwriteInfoBarDelegate*>(delegate());
 }
 
 // Native JNI methods ---------------------------------------------------------
 
 bool RegisterDownloadOverwriteInfoBarDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }