Replace NT prefix in sandbox rules match string to handle correct wildcard escaping

sandbox/win/src/file_policy_test.cc

Index: sandbox/win/src/file_policy_test.cc
diff --git a/sandbox/win/src/file_policy_test.cc b/sandbox/win/src/file_policy_test.cc
index adda1a5f8742626a91f7973dc33fa6e053abe88d..b0d033b7de6750f0e837be9ff5e0de8c5b48e70e 100644
--- a/sandbox/win/src/file_policy_test.cc
+++ b/sandbox/win/src/file_policy_test.cc
@@ -9,6 +9,7 @@
 #include <winioctl.h>
 
 #include "base/win/scoped_handle.h"
+#include "sandbox/win/src/filesystem_policy.h"
 #include "sandbox/win/src/nt_internals.h"
 #include "sandbox/win/src/sandbox.h"
 #include "sandbox/win/src/sandbox_factory.h"
@@ -596,4 +597,28 @@ TEST(FilePolicyTest, DISABLED_TestReparsePoint) {
   EXPECT_TRUE(::RemoveDirectory(subfolder.c_str()));
 }
 
+TEST(FilePolicyTest, CheckExistingNTPrefixEscape) {
+  base::string16 name = L"\\??\\NAME";
+
+  base::string16 result = FixNTPrefixForMatch(name);
+
+  EXPECT_STREQ(result.c_str(), L"\\/?/?\\NAME");
+}
+
+TEST(FilePolicyTest, CheckEscapedNTPrefixNoEscape) {
+  base::string16 name = L"\\/?/?\\NAME";
+
+  base::string16 result = FixNTPrefixForMatch(name);
+
+  EXPECT_STREQ(result.c_str(), name.c_str());
+}
+
+TEST(FilePolicyTest, CheckMissingNTPrefixEscape) {
+  base::string16 name = L"C:\\NAME";
+
+  base::string16 result = FixNTPrefixForMatch(name);
+
+  EXPECT_STREQ(result.c_str(), L"\\/?/?\\C:\\NAME");
+}
+
 }  // namespace sandbox