Independently enable recording and event callback

webkit/child/webkitplatformsupport_impl.h

 // Copyright (c) 2012 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 WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/debug/trace_event.h"
 #include "base/platform_file.h"
@@ skipping 69 matching lines @@
   virtual TraceEventHandle addTraceEvent(
       char phase,
       const unsigned char* category_group_enabled,
       const char* name,
       unsigned long long id,
       int num_args,
       const char** arg_names,
       const unsigned char* arg_types,
       const unsigned long long* arg_values,
       unsigned char flags);
+  // TODO(wangxianzhu): Remove this function after transition to the new one.
   virtual void updateTraceEventDuration(TraceEventHandle);
+  virtual void updateTraceEventDuration(
+      const unsigned char* category_group_enabled,
+      const char* name,
+      TraceEventHandle);
   virtual blink::WebData loadResource(const char* name);
   virtual blink::WebString queryLocalizedString(
       blink::WebLocalizedString::Name name);
   virtual blink::WebString queryLocalizedString(
       blink::WebLocalizedString::Name name, int numeric_value);
   virtual blink::WebString queryLocalizedString(
       blink::WebLocalizedString::Name name, const blink::WebString& value);
   virtual blink::WebString queryLocalizedString(
       blink::WebLocalizedString::Name name,
       const blink::WebString& value1, const blink::WebString& value2);
@@ skipping 42 matching lines @@
   base::OneShotTimer<WebKitPlatformSupportImpl> shared_timer_;
   void (*shared_timer_func_)();
   double shared_timer_fire_time_;
   bool shared_timer_fire_time_was_set_while_suspended_;
   int shared_timer_suspended_;  // counter
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_