Fix a crash when downloading a dangerous download

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 <string>
 #include <type_traits>
@@ skipping 24 matching lines @@
 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,
-                                    const JavaParamRef<jclass>& clazz,
-                                    const JavaParamRef<jstring>& filename) {
-  base::FilePath path(base::android::ConvertJavaStringToUTF8(env, filename));
-  return safe_browsing::FileTypePolicies::GetInstance()->GetFileDangerLevel(
-             path) != safe_browsing::DownloadFileType::NOT_DANGEROUS;
-}
-
 // static
 bool ChromeDownloadDelegate::EnqueueDownloadManagerRequest(
     jobject chrome_download_delegate,
     bool overwrite,
     jobject download_info) {
   JNIEnv* env = base::android::AttachCurrentThread();
 
   return Java_ChromeDownloadDelegate_enqueueDownloadManagerRequestFromNative(
       env, chrome_download_delegate, overwrite, download_info);
 }
@@ skipping 79 matching lines @@
   auto* web_contents = WebContents::FromJavaWebContents(jweb_contents);
   ChromeDownloadDelegate::CreateForWebContents(web_contents);
   ChromeDownloadDelegate::FromWebContents(web_contents)->SetJavaRef(env, obj);
 }
 
 bool RegisterChromeDownloadDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ChromeDownloadDelegate);