Modify fileAtPath stat to track if the call was redirected by chrome_elf.

chrome_elf/create_file/chrome_create_file.cc

Index: chrome_elf/create_file/chrome_create_file.cc
diff --git a/chrome_elf/create_file/chrome_create_file.cc b/chrome_elf/create_file/chrome_create_file.cc
index b6744f3f34d38f5f34967bb4c3da44dc50b7e7d9..52a88f909abcb8859031bb6cf5d29031738c8ede 100644
--- a/chrome_elf/create_file/chrome_create_file.cc
+++ b/chrome_elf/create_file/chrome_create_file.cc
@@ -11,6 +11,9 @@
 #include "chrome_elf/ntdll_cache.h"
 #include "sandbox/win/src/nt_internals.h"
 
+// Record the number of calls we've redirected so far.
+int g_redirect_count = 0;

[robertshield, 2014/02/18 23:30:21]

This is only used in this file, it can be moved into the anonymous namespace.

[Cait (Slow), 2014/02/19 15:43:18]

Done.

+
 namespace {
 
 // From ShlObj.h in the Windows SDK.
@@ -92,6 +95,7 @@ HANDLE WINAPI CreateFileWRedirect(
     DWORD flags_and_attributes,
     HANDLE template_file) {
   if (ShouldBypass(file_name)) {
+    g_redirect_count++;
     return CreateFileNTDLL(file_name,
                            desired_access,
                            share_mode,
@@ -110,6 +114,10 @@ HANDLE WINAPI CreateFileWRedirect(
 
 }
 
+int GetRedirectCount() {
+  return g_redirect_count;
+}
+
 HANDLE CreateFileNTDLL(
     LPCWSTR file_name,
     DWORD desired_access,