[inspector_protocol] Support chromium code style.

lib/Collections_h.template

 // Copyright 2016 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.
 
 #ifndef {{"_".join(config.protocol.namespace)}}_Collections_h
 #define {{"_".join(config.protocol.namespace)}}_Collections_h
 
-#include "{{config.protocol.package}}/Forward.h"
+#include {{format_include(config.protocol.package, "Forward")}}
 #include <cstddef>
 
 #if defined(__APPLE__) && !defined(_LIBCPP_VERSION)
 #include <map>
 #include <set>
 
 {% for namespace in config.protocol.namespace %}
 namespace {{namespace}} {
 {% endfor %}
 
@@ skipping 15 matching lines @@
 template <class Key, class T> using HashMap = std::unordered_map<Key, T>;
 template <class Key> using HashSet = std::unordered_set<Key>;
 
 {% for namespace in config.protocol.namespace %}
 } // namespace {{namespace}}
 {% endfor %}
 
 #endif // defined(__APPLE__) && !defined(_LIBCPP_VERSION)
 
 #endif // !defined({{"_".join(config.protocol.namespace)}}_Collections_h)