FileURLToFilePath: Don't unescape '/' and '\\'.

net/base/filename_util_unittest.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 "net/base/filename_util.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 221 matching lines @@
   FileCase url_cases[] = {
 #if defined(OS_WIN)
     {L"C:\\foo\\bar.txt", "file:c|/foo\\bar.txt"},
     {L"C:\\foo\\bar.txt", "file:/c:/foo/bar.txt"},
     {L"\\\\foo\\bar.txt", "file://foo\\bar.txt"},
     {L"C:\\foo\\bar.txt", "file:///c:/foo/bar.txt"},
     {L"\\\\foo\\bar.txt", "file:////foo\\bar.txt"},
     {L"\\\\foo\\bar.txt", "file:/foo/bar.txt"},
     {L"\\\\foo\\bar.txt", "file://foo\\bar.txt"},
     {L"C:\\foo\\bar.txt", "file:\\\\\\c:/foo/bar.txt"},
+    // %2f ('/') and %5c ('\\') are left alone by both GURL and
+    // FileURLToFilePath.
+    {L"C:\\foo%2f..%5cbar", "file:///C:\\foo%2f..%5cbar"},
 #elif defined(OS_POSIX)
     {L"/c:/foo/bar.txt", "file:/c:/foo/bar.txt"},
     {L"/c:/foo/bar.txt", "file:///c:/foo/bar.txt"},
     {L"/foo/bar.txt", "file:/foo/bar.txt"},
     {L"/c:/foo/bar.txt", "file:\\\\\\c:/foo/bar.txt"},
     {L"/foo/bar.txt", "file:foo/bar.txt"},
     {L"/bar.txt", "file://foo/bar.txt"},
     {L"/foo/bar.txt", "file:///foo/bar.txt"},
     {L"/foo/bar.txt", "file:////foo/bar.txt"},
     {L"/foo/bar.txt", "file:////foo//bar.txt"},
     {L"/foo/bar.txt", "file:////foo///bar.txt"},
     {L"/foo/bar.txt", "file:////foo////bar.txt"},
     {L"/c:/foo/bar.txt", "file:\\\\\\c:/foo/bar.txt"},
     {L"/c:/foo/bar.txt", "file:c:/foo/bar.txt"},
+    // %2f ('/') and %5c ('\\') are left alone by both GURL and
+    // FileURLToFilePath.
+    {L"/foo%2f..%5cbar", "file:///foo%2f..%5cbar"},
 //  We get these wrong because GURL turns back slashes into forward
 //  slashes.
 //  {L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
 //  {L"/c|/foo%5Cbar.txt", "file:c|/foo\\bar.txt"},
 //  {L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
 //  {L"/foo%5Cbar.txt", "file:////foo\\bar.txt"},
 //  {L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
 #endif
   };
   for (size_t i = 0; i < arraysize(url_cases); i++) {
@@ skipping 801 matching lines @@
   }
 
   for (size_t i = 0; i < arraysize(kUnsafePortableBasenamesForWindows); ++i) {
     EXPECT_TRUE(IsReservedNameOnWindows(
         base::FilePath(kUnsafePortableBasenamesForWindows[i]).value()))
         << kUnsafePortableBasenamesForWindows[i];
   }
 }
 
 }  // namespace net