[headless] Refactor headless devtools client API.

headless/lib/browser/devtools_api/domain_h.template

 // This file is generated
 
 // Copyright (c) 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 HEADLESS_PUBLIC_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_
-#define HEADLESS_PUBLIC_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_
+#ifndef HEADLESS_PUBLIC_DEVTOOLS_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_
+#define HEADLESS_PUBLIC_DEVTOOLS_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_
 
 #include "base/callback.h"
 #include "base/observer_list.h"
 #include "base/values.h"
-#include "headless/public/domains/types.h"
+{% for domain_name in domain.dependencies %}
+#include "headless/public/devtools/domains/types_{{domain_name | camelcase_to_hacker_style}}.h"
+{% endfor %}
 #include "headless/public/headless_export.h"
 #include "headless/public/internal/message_dispatcher.h"
 
 {# Macro for defining a member function for a given command. #}
 {% macro command_decl(command) %}
   {% set method_name = command.name | to_title_case %}
   {% if command.description %}
   // {{ command.description }}
   {% endif %}
   void {{method_name}}(std::unique_ptr<{{method_name}}Params> params, base::Callback<void(std::unique_ptr<{{method_name}}Result>)> callback = base::Callback<void(std::unique_ptr<{{method_name}}Result>)>());
@@ skipping 130 matching lines @@
 {{ command_decl(command) }}
   {% endfor %}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ExperimentalDomain);
 };
 
 }  // namespace {{domain.domain | camelcase_to_hacker_style}}
 }  // namespace headless
 
-#endif  // HEADLESS_PUBLIC_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_
+#endif  // HEADLESS_PUBLIC_DEVTOOLS_DOMAINS_{{domain.domain | camelcase_to_hacker_style | upper}}_H_