Implement a new flow event API that allows binding flow events and regular events.

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index 1fbb0a5439a65e14c143a9b8a700405994d01417..e78df92e6f05cbdabc5d437d1a25c2aef3c90a69 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -641,7 +641,7 @@ blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
           phase, category_group_enabled, name, id,
           base::PlatformThread::CurrentId(),
           timestamp_tt,
-          num_args, arg_names, arg_types, arg_values, NULL, flags);
+          num_args, arg_names, arg_types, arg_values, NULL, flags, 0);
   blink::Platform::TraceEventHandle result;
   memcpy(&result, &handle, sizeof(result));
   return result;
@@ -685,7 +685,7 @@ blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
                                       arg_types,
                                       arg_values,
                                       convertable_wrappers,
-                                      flags);
+                                      flags, 0);
   blink::Platform::TraceEventHandle result;
   memcpy(&result, &handle, sizeof(result));
   return result;