Add path traversal protection to Move and CopyFile too.

base/file_util.cc

Index: base/file_util.cc
===================================================================
--- base/file_util.cc	(revision 180593)
+++ base/file_util.cc	(working copy)
@@ -77,6 +77,18 @@
   value.insert(last_dot, suffix);
 }
 
+bool Move(const FilePath& from_path, const FilePath& to_path) {
+  if (from_path.ReferencesParent() || to_path.ReferencesParent())
+    return false;
+  return MoveUnsafe(from_path, to_path);
+}
+
+bool CopyFile(const FilePath& from_path, const FilePath& to_path) {
+  if (from_path.ReferencesParent() || to_path.ReferencesParent())
+    return false;
+  return CopyFileUnsafe(from_path, to_path);
+}
+
 bool ContentsEqual(const FilePath& filename1, const FilePath& filename2) {
   // We open the file in binary format even if they are text files because
   // we are just comparing that bytes are exactly same in both files and not