[instrumentation] Generalize instrumentation to be used beyond the core layer

third_party/WebKit/Source/platform/instrumentation/InstrumentingAgents_h.template

 // This file is generated from {{input_file}}
 
 // Copyright 2017 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 InstrumentingAgents_h
-#define InstrumentingAgents_h
+{% set agents_class = name + "Agents" %}
 
-#include "core/CoreExport.h"
+#ifndef {{agents_class}}_h
+#define {{agents_class}}_h
+
 #include "platform/heap/HeapAllocator.h"
+{% for define in defines %}
+{{define}}
+{% endfor %}
 
 namespace blink {
 
 {% for agent in agents %}
 class {{ agent | agent_name_to_class }};
 {% endfor %}
 
-class CORE_EXPORT InstrumentingAgents : public GarbageCollected<InstrumentingAgents> {
-  WTF_MAKE_NONCOPYABLE(InstrumentingAgents);
+class PROBE_EXPORT {{agents_class}} : public GarbageCollected<{{agents_class}}> {
+  WTF_MAKE_NONCOPYABLE({{agents_class}});
 
  public:
-  InstrumentingAgents();
+  {{agents_class}}();
   DECLARE_TRACE();
 
 {% for agent in agents %}
 {% set class_name = agent | agent_name_to_class %}
 {% set getter_name = class_name | to_lower_case %}
   bool has{{class_name}}s() const { return m_has{{class_name}}s; }
   const HeapHashSet<Member<{{class_name}}>>& {{getter_name}}s() const { return m_{{getter_name}}s; }
   void add{{class_name}}({{class_name}}* agent);
   void remove{{class_name}}({{class_name}}* agent);
 
 {% endfor %}
  private:
 {% for agent in agents %}
 {% set class_name = agent | agent_name_to_class %}
 {% set getter_name = class_name | to_lower_case %}
   HeapHashSet<Member<{{class_name}}>> m_{{getter_name}}s;
   bool m_has{{class_name}}s = false;
 {% endfor %}
 };
 
 } // namespace blink
 
-#endif // !defined(InstrumentingAgents_h)
+#endif // !defined({{agents_class}}_h)