Added new fileBrowserPrivate and fileHandler extension APIs

webkit/chromeos/fileapi/cros_mount_point_provider.cc

Index: webkit/chromeos/fileapi/cros_mount_point_provider.cc
===================================================================
--- webkit/chromeos/fileapi/cros_mount_point_provider.cc	(revision 80410)
+++ webkit/chromeos/fileapi/cros_mount_point_provider.cc	(working copy)
@@ -120,5 +120,16 @@
   return special_storage_policy_->IsLocalFileSystemAccessAllowed(origin_url);
 }
 
+std::vector<FilePath> CrosMountPointProvider::GetRootDirectories() const {
+  std::vector<FilePath> root_dirs;
+  for (MountPointMap::const_iterator iter = mount_point_map_.begin();
+       iter != mount_point_map_.end();
+       ++iter) {
+    FilePath path(iter->second);
+    root_dirs.push_back(path.Append(iter->first));
+  }
+  return root_dirs;
+}
+
 }  // namespace chromeos