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

net/base/filename_util_unittest.cc

Index: net/base/filename_util_unittest.cc
diff --git a/net/base/filename_util_unittest.cc b/net/base/filename_util_unittest.cc
index 5e3fb7e1c9f91fe59b5702ce274034d87c6ce5aa..4ca7f02c30d8f613956fdd8bd30326eb8f50c262 100644
--- a/net/base/filename_util_unittest.cc
+++ b/net/base/filename_util_unittest.cc
@@ -239,6 +239,9 @@ TEST(FilenameUtilTest, FileURLConversion) {
     {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"},
@@ -253,6 +256,9 @@ TEST(FilenameUtilTest, FileURLConversion) {
     {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"},