chromeos: Check both original and absolute paths for file: scheme

chrome/browser/net/chrome_network_delegate_unittest.cc

 // Copyright (c) 2012 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/net/chrome_network_delegate.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 583 matching lines @@
 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
   // Platforms other than Chrome OS and Android have access to any files.
   EXPECT_TRUE(IsAccessAllowed("/", ""));
   EXPECT_TRUE(IsAccessAllowed("/foo.txt", ""));
 #endif
 
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   // Chrome OS and Android don't have access to random files.
   EXPECT_FALSE(IsAccessAllowed("/", ""));
   EXPECT_FALSE(IsAccessAllowed("/foo.txt", ""));
+  // Empty path should not be allowed.
+  EXPECT_FALSE(IsAccessAllowed("", ""));
 #endif
 
 #if defined(OS_CHROMEOS)
   // Chrome OS allows the following directories.
   EXPECT_TRUE(IsAccessAllowed("/home/chronos/user/Downloads", ""));
   EXPECT_TRUE(IsAccessAllowed("/home/chronos/user/log", ""));
   EXPECT_TRUE(IsAccessAllowed("/home/chronos/user/WebRTC Logs", ""));
   EXPECT_TRUE(IsAccessAllowed("/media", ""));
   EXPECT_TRUE(IsAccessAllowed("/opt/oem", ""));
   EXPECT_TRUE(IsAccessAllowed("/usr/share/chromeos-assets", ""));
@@ skipping 22 matching lines @@
 
   // Files in external storage are allowed.
   base::FilePath external_storage_path;
   PathService::Get(base::DIR_ANDROID_EXTERNAL_STORAGE, &external_storage_path);
   EXPECT_TRUE(IsAccessAllowed(
       external_storage_path.AppendASCII("foo.txt").AsUTF8Unsafe(), ""));
   // The external storage root itself is not allowed.
   EXPECT_FALSE(IsAccessAllowed(external_storage_path.AsUTF8Unsafe(), ""));
 #endif
 }