[DevTools] Generate public versions of protocol classes to be exposed in v8_inspector/public.

third_party/WebKit/Source/platform/inspector_protocol/Exported_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 protocol_{{domain.domain}}_api_h
+#define protocol_{{domain.domain}}_api_h
+
+{% if export_macro == "PLATFORM_EXPORT" %}
+#include "platform/inspector_protocol/Platform.h"
+{% else %}
+#include "core/CoreExport.h"
+{% endif %}
+#include "platform/inspector_protocol/String16.h"
+
+namespace blink {
+namespace protocol {
+namespace {{domain.domain}} {
+namespace API {
+
+// ------------- Enums.
+  {% for type in domain.types %}
+    {% if ("enum" in type) and type.exported %}
+
+namespace {{type.id}}Enum {
+      {% for literal in type.enum %}
+{{export_macro}} extern const char* {{ literal | dash_to_camelcase}};
+      {% endfor %}
+} // {{type.id}}Enum
+    {% endif %}
+  {% endfor %}
+  {% for command in join_arrays(domain, ["commands", "events"]) %}
+    {% for param in join_arrays(command, ["parameters", "returns"]) %}
+      {% if ("enum" in param) and (param.exported) %}
+
+namespace {{command.name | to_title_case}} {
+namespace {{param.name | to_title_case}}Enum {
+        {% for literal in param.enum %}
+{{export_macro}} extern const char* {{ literal | dash_to_camelcase}};
+        {% endfor %}
+} // {{param.name | to_title_case}}Enum
+} // {{command.name | to_title_case }}
+      {% endif %}
+    {% endfor %}
+  {% endfor %}
+
+// ------------- Types.
+  {% for type in domain.types %}
+    {% if not (type.type == "object") or not ("properties" in type) or not (type.exported) %}{% continue %}{% endif %}
+
+class {{export_macro}} {{type.id}} {
+public:
+    virtual String16 toJSONString() const = 0;
+    virtual ~{{type.id}}() { }
+    static std::unique_ptr<protocol::{{domain.domain}}::API::{{type.id}}> fromJSONString(const String16& json);
+};
+  {% endfor %}
+
+} // namespace API
+} // namespace {{domain.domain}}
+} // namespace protocol
+} // namespace blink
+
+#endif // !defined(protocol_{{domain.domain}}_api_h)