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

chrome/browser/profiles/file_path_verifier_win.cc

Index: chrome/browser/profiles/file_path_verifier_win.cc
diff --git a/chrome/browser/profiles/file_path_verifier_win.cc b/chrome/browser/profiles/file_path_verifier_win.cc
index 44d34a435bd3da2e652174c078940e8640151a0e..8ffe9ebb416b21c0ceb20f91802ba8381df78912 100644
--- a/chrome/browser/profiles/file_path_verifier_win.cc
+++ b/chrome/browser/profiles/file_path_verifier_win.cc
@@ -9,6 +9,7 @@
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/metrics/histogram.h"
+#include "chrome_elf/create_file/chrome_create_file.h"
 
 namespace {
 
@@ -20,6 +21,9 @@ enum FileVerificationResult {
   FILE_VERIFICATION_FAILED_UNKNOWN,
   FILE_VERIFICATION_FAILED_SAMEBASE,
   FILE_VERIFICATION_FAILED_SAMEDIR,
+  FILE_VERIFICATION_SUCCESS_REDIRECT,
+  FILE_VERIFICATION_FAILED_SAMEBASE_REDIRECT,
+  FILE_VERIFICATION_FAILED_SAMEDIR_REDIRECT,
   NUM_FILE_VERIFICATION_RESULTS
 };
 
@@ -28,6 +32,7 @@ FileVerificationResult VerifyFileAtPath(const base::FilePath& file) {
   FileVerificationResult file_verification_result =
       FILE_VERIFICATION_FAILED_UNKNOWN;
   base::FilePath normalized_path;
+  int redirect_count_before = ::GetRedirectCount();
   if (!base::NormalizeFilePath(file, &normalized_path)) {
     if (::GetLastError() == ERROR_FILE_NOT_FOUND)
       file_verification_result = FILE_VERIFICATION_FILE_NOT_FOUND;
@@ -36,15 +41,24 @@ FileVerificationResult VerifyFileAtPath(const base::FilePath& file) {
   } else {
     internal::PathComparisonReason path_comparison_reason =
         internal::ComparePathsIgnoreCase(file, normalized_path);
+    // GetRedirectCount() tracks the number of CreateFile() calls that were
+    // redirected. If it has increased then the CreateFile() call made by
+    // base::NormalizeFilePath() was redirected.
+    bool was_redirected = ::GetRedirectCount() > redirect_count_before;
     switch (path_comparison_reason) {
       case internal::PATH_COMPARISON_EQUAL:
-        file_verification_result = FILE_VERIFICATION_SUCCESS;
+        file_verification_result = was_redirected ?
+            FILE_VERIFICATION_SUCCESS_REDIRECT : FILE_VERIFICATION_SUCCESS;
         break;
       case internal::PATH_COMPARISON_FAILED_SAMEBASE:
-        file_verification_result = FILE_VERIFICATION_FAILED_SAMEBASE;
+        file_verification_result = was_redirected ?
+            FILE_VERIFICATION_FAILED_SAMEBASE_REDIRECT :
+            FILE_VERIFICATION_FAILED_SAMEBASE;
         break;
       case internal::PATH_COMPARISON_FAILED_SAMEDIR:
-        file_verification_result = FILE_VERIFICATION_FAILED_SAMEDIR;
+        file_verification_result = was_redirected ?
+            FILE_VERIFICATION_FAILED_SAMEDIR_REDIRECT :
+            FILE_VERIFICATION_FAILED_SAMEDIR;
         break;
     }
   }