DevTools: brush up remote debugging browser target: use callbacks, make handlers implementation a m…

content/browser/devtools/devtools_tracing_handler.h

Index: content/browser/devtools/devtools_tracing_handler.h
diff --git a/content/browser/devtools/devtools_tracing_handler.h b/content/browser/devtools/devtools_tracing_handler.h
index 9cca19b56cf685cd1d191a81708385cfbacd0f19..75dea1fee121bc05003b101a3eb87fb9433249fa 100644
--- a/content/browser/devtools/devtools_tracing_handler.h
+++ b/content/browser/devtools/devtools_tracing_handler.h
@@ -16,7 +16,7 @@ class DevToolsWebSocketSender;
 // infrastructure.
 class DevToolsTracingHandler
     : public TraceSubscriber,
-      public DevToolsBrowserTarget::Handler {
+      public DevToolsBrowserTarget::DomainHandler {
  public:
   DevToolsTracingHandler();
   virtual ~DevToolsTracingHandler();
@@ -26,17 +26,11 @@ class DevToolsTracingHandler
   virtual void OnTraceDataCollected(
       const scoped_refptr<base::RefCountedString>& trace_fragment) OVERRIDE;
 
-  // DevToolBrowserTarget::Handler:
-  virtual std::string Domain() OVERRIDE;
-  virtual base::Value* OnProtocolCommand(
-      const std::string& method,
-      const base::DictionaryValue* params,
-      base::Value** error_out) OVERRIDE;
-
  private:
-  base::Value* Start(const base::DictionaryValue* params);
-  base::Value* End(const base::DictionaryValue* params);
-  void SendNotification(const std::string& method, const std::string& value);
+  base::DictionaryValue* OnStart(const base::DictionaryValue* params,
+                                 base::Value** error_out);
+  base::DictionaryValue* OnEnd(const base::DictionaryValue* params,
+                               base::Value** error_out);
 
   bool is_running_;