DevTools: use explicit IPC messages for enabling/disabling tracing instead of intercepting protocol…

content/browser/devtools/devtools_protocol.h

Index: content/browser/devtools/devtools_protocol.h
diff --git a/content/browser/devtools/devtools_protocol.h b/content/browser/devtools/devtools_protocol.h
index 71c24ab0f0176386581911d6cfe920b385b71a64..cbc075b37157db00260f4fdd8b309e4d4ae5a089 100644
--- a/content/browser/devtools/devtools_protocol.h
+++ b/content/browser/devtools/devtools_protocol.h
@@ -127,18 +127,12 @@ class DevToolsProtocol {
    public:
     typedef base::Callback<scoped_refptr<DevToolsProtocol::Response>(
         scoped_refptr<DevToolsProtocol::Command> command)> CommandHandler;
-    typedef base::Callback<void(
-        scoped_refptr<DevToolsProtocol::Notification> notification)>
-            NotificationHandler;
 
     virtual ~Handler();
 
     virtual scoped_refptr<DevToolsProtocol::Response> HandleCommand(
         scoped_refptr<DevToolsProtocol::Command> command);
 
-    virtual void HandleNotification(
-        scoped_refptr<DevToolsProtocol::Notification> notification);
-
     void SetNotifier(const Notifier& notifier);
 
    protected:
@@ -147,9 +141,6 @@ class DevToolsProtocol {
     void RegisterCommandHandler(const std::string& command,
                                 const CommandHandler& handler);
 
-    void RegisterNotificationHandler(const std::string& notification,
-                                     const NotificationHandler& handler);
-
     // Sends notification to the client. Takes ownership of |params|.
     void SendNotification(const std::string& method,
                           base::DictionaryValue* params);
@@ -162,11 +153,9 @@ class DevToolsProtocol {
 
    private:
     typedef std::map<std::string, CommandHandler> CommandHandlers;
-    typedef std::map<std::string, NotificationHandler> NotificationHandlers;
 
     Notifier notifier_;
     CommandHandlers command_handlers_;
-    NotificationHandlers notification_handlers_;
 
     DISALLOW_COPY_AND_ASSIGN(Handler);
   };