Move common file path related methods between chrome & content to file_util. I reduced the 4 meth...

content/browser/download/download_item_impl.cc

Index: content/browser/download/download_item_impl.cc
===================================================================
--- content/browser/download/download_item_impl.cc	(revision 119906)
+++ content/browser/download/download_item_impl.cc	(working copy)
@@ -790,9 +790,8 @@
 
 FilePath DownloadItemImpl::GetFileNameToReportUser() const {
   if (state_info_.path_uniquifier > 0) {
-    FilePath name(state_info_.target_name);
-    DownloadFile::AppendNumberToPath(&name, state_info_.path_uniquifier);
-    return name;
+    return state_info_.target_name.InsertBeforeExtensionASCII(
+        StringPrintf(" (%d)", state_info_.path_uniquifier));
   }
   return state_info_.target_name;
 }