DevTools: split protocol Dispatcher into Backend interface and the dispatcher itself.

third_party/WebKit/Source/platform/inspector_protocol/Backend_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 {{class_name}}_h
 #define {{class_name}}_h
 
 #include "platform/inspector_protocol/TypeBuilder.h"
 
 namespace blink {
 namespace protocol {
 
 class FrontendChannel;
-class DispatcherImplWeakPtr;
+class BackendImplWeakPtr;
 
-class PLATFORM_EXPORT Dispatcher {
+class PLATFORM_EXPORT Backend {
 public:
-    static PassOwnPtr<Dispatcher> create(FrontendChannel* frontendChannel);
-    virtual ~Dispatcher() { }
-
     class PLATFORM_EXPORT CallbackBase {
     public:
-        CallbackBase(PassOwnPtr<DispatcherImplWeakPtr> backendImpl, int sessionId, int id);
-        virtual ~CallbackBase();
-        void sendFailure(const ErrorString&);
-        void dispose();
+        virtual ~CallbackBase() { }
+        virtual void sendFailure(const ErrorString&) = 0;
+    };
+{% for domain in api.domains %}
 
-    protected:
-        void sendIfActive(PassOwnPtr<protocol::DictionaryValue> partialMessage, const ErrorString& invocationError);
-
-    private:
-        OwnPtr<DispatcherImplWeakPtr> m_backendImpl;
-        int m_sessionId;
-        int m_id;
-    };
-
-{% for domain in api.domains %}
-    class PLATFORM_EXPORT {{domain.domain}}CommandHandler {
+    class PLATFORM_EXPORT {{domain.domain}} {
     public:
   {% for command in domain.commands %}
     {% if "redirect" in command %}{% continue %}{% endif %}
     {% if ("handlers" in command) and not ("renderer" in command["handlers"]) %}{% continue %}{% endif %}
     {% if "async" in command %}
         class PLATFORM_EXPORT {{command.name | to_title_case}}Callback : public CallbackBase {
         public:
-            {{command.name | to_title_case}}Callback(PassOwnPtr<DispatcherImplWeakPtr>, int sessionId, int id);
-            void sendSuccess(
+            virtual void sendSuccess(
             {%- for parameter in command.returns -%}
               {%- if "optional" in parameter -%}
                 const Maybe<{{resolve_type(parameter).raw_type}}>& {{parameter.name}}
               {%- else -%}
                 {{resolve_type(parameter).pass_type}} {{parameter.name}}
               {%- endif -%}
               {%- if not loop.last -%}, {% endif -%}
             {%- endfor -%}
-            );
+            ) = 0;
         };
     {% endif %}
         virtual void {{command.name}}(ErrorString*
     {%- for parameter in command.parameters -%}
         {%- if "optional" in parameter -%}
             , const Maybe<{{resolve_type(parameter).raw_type}}>& in_{{parameter.name}}
         {%- else -%}
             , {{resolve_type(parameter).pass_type}} in_{{parameter.name}}
         {%- endif -%}
     {%- endfor -%}
     {%- if "async" in command -%}
             , PassOwnPtr<{{command.name | to_title_case}}Callback> callback
     {%- else -%}
       {%- for parameter in command.returns -%}
         {%- if "optional" in parameter -%}
             , Maybe<{{resolve_type(parameter).raw_type}}>* out_{{parameter.name}}
         {%- else -%}
             , {{resolve_type(parameter).type}}* out_{{parameter.name}}
         {%- endif -%}
       {%- endfor -%}
     {%- endif -%}
         ) = 0;
   {% endfor %}
 
     protected:
-        virtual ~{{domain.domain}}CommandHandler() { }
+        virtual ~{{domain.domain}}() { }
     };
 {% endfor %}
-
-{% for domain in api.domains %}
-    virtual void registerAgent({{domain.domain | to_title_case}}CommandHandler*) = 0;
-{% endfor %}
-
-    virtual void clearFrontend() = 0;
-
-    enum CommonErrorCode {
-        ParseError = 0,
-        InvalidRequest,
-        MethodNotFound,
-        InvalidParams,
-        InternalError,
-        ServerError,
-        LastEntry,
-    };
-
-    void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String16& errorMessage) const;
-    virtual void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String16& errorMessage, ErrorSupport*) const = 0;
-    virtual void dispatch(int sessionId, const String16& message) = 0;
-    static bool getCommandName(const String16& message, String16* result);
 };
 
 } // namespace protocol
 } // namespace blink
 
 #endif // !defined({{class_name}}_h)