Getting service process on Mac to handle having things moved/changed underneath it.

base/file_util_win.cc

Index: base/file_util_win.cc
diff --git a/base/file_util_win.cc b/base/file_util_win.cc
index 2c26a16e825b477d63582323a1942be5195703b0..f810ba9b5bdd0445de7c0e4757ab6fe44d831762 100644
--- a/base/file_util_win.cc
+++ b/base/file_util_win.cc
@@ -680,6 +680,17 @@ bool CreateDirectory(const FilePath& full_path) {
   }
 }
 
+bool AreReferringToSameObject(const FilePath& a, const FilePath& b) {
+  FilePath normal_a;
+  FilePath normal_b;
+  if (file_util::NormalizeFilePath(a, &normal_a)) {
+    if (file_util::NormalizeFilePath(b, &normal_b)) {
+      return normal_a == normal_b;
+    }
+  }
+  return false;
+}
+
 bool GetFileInfo(const FilePath& file_path, base::PlatformFileInfo* results) {
   base::ThreadRestrictions::AssertIOAllowed();