Move chromeos::GetInterfacesFromIntrospectResult into IntrospectableClient

chrome/browser/chromeos/dbus/introspect_util.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/chromeos/dbus/introspect_util.h"
-
-#include "third_party/libxml/chromium/libxml_utils.h"
-
-namespace {
-
-// String constants used for parsing D-Bus Introspection XML data.
-const char kInterfaceNode[] = "interface";
-const char kInterfaceNameAttribute[] = "name";
-
-}
-
-namespace chromeos {
-
-std::vector<std::string> GetInterfacesFromIntrospectResult(
-    const std::string& xml_data) {
-  std::vector<std::string> interfaces;
-
-  XmlReader reader;
-  if (!reader.Load(xml_data))
-    return interfaces;
-
-  do {
-    // Skip to the next open tag, exit when done.
-    while (!reader.SkipToElement()) {
-      if (!reader.Read()) {
-        return interfaces;
-      }
-    }
-
-    // Only look at interface nodes.
-    if (reader.NodeName() != kInterfaceNode)
-      continue;
-
-    // Skip if missing the interface name.
-    std::string interface_name;
-    if (!reader.NodeAttribute(kInterfaceNameAttribute, &interface_name))
-      continue;
-
-    interfaces.push_back(interface_name);
-  } while (reader.Read());
-
-  return interfaces;
-}
-
-}