CreateDirectory() should check if an existing path is actually a directory...

net/disk_cache/backend_impl.cc

Index: net/disk_cache/backend_impl.cc
===================================================================
--- net/disk_cache/backend_impl.cc	(revision 2057)
+++ net/disk_cache/backend_impl.cc	(working copy)
@@ -730,7 +730,6 @@
 }
 
 bool BackendImpl::InitBackingStore(bool* file_created) {
-  // This call fails if the folder exists.
   file_util::CreateDirectory(path_);
 
   std::wstring index_name(path_);