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

base/file_util_posix.cc

Index: base/file_util_posix.cc
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index 8df0d27f2dfbde297b8bc9025f3ce13800d4a531..a9c69135d3be39dcc75a82142de1bf4547f1cf22 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -524,13 +524,25 @@ bool GetFileInfo(const FilePath& file_path, base::PlatformFileInfo* results) {
   return true;
 }
 
-bool GetInode(const FilePath& path, ino_t* inode) {
+bool AreReferringToSameObject(const FilePath& a, const FilePath& b) {
+  ino_t inode_a, inode_b;
+  dev_t dev_a, dev_b;
+  if (GetInodeAndDevice(a, &inode_a, &dev_a)) {
+    if (GetInodeAndDevice(b, &inode_b, &dev_b)) {
+      return (inode_a == inode_b) && (dev_a == dev_b);
+    }
+  }
+  return false;
+}
+  
+bool GetInodeAndDevice(const FilePath& path, ino_t* inode, dev_t* dev) {
   base::ThreadRestrictions::AssertIOAllowed();  // For call to stat().
   struct stat buffer;
   int result = stat(path.value().c_str(), &buffer);
   if (result < 0)
     return false;
-
+    
+  *dev = buffer.st_dev;
   *inode = buffer.st_ino;
   return true;
 }