[web-ui] Migrate RegisterMessageCallback usage to base::bind().

chrome/browser/ui/webui/flags_ui.cc

Index: chrome/browser/ui/webui/flags_ui.cc
===================================================================
--- chrome/browser/ui/webui/flags_ui.cc	(revision 103795)
+++ chrome/browser/ui/webui/flags_ui.cc	(working copy)
@@ -6,6 +6,8 @@
 
 #include <string>
 
+#include "base/bind.h"
+#include "base/bind_helpers.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/about_flags.h"
@@ -101,11 +103,14 @@
 
 void FlagsDOMHandler::RegisterMessages() {
   web_ui_->RegisterMessageCallback("requestFlagsExperiments",
-      NewCallback(this, &FlagsDOMHandler::HandleRequestFlagsExperiments));
+      base::Bind(&FlagsDOMHandler::HandleRequestFlagsExperiments,
+                 base::Unretained(this)));
   web_ui_->RegisterMessageCallback("enableFlagsExperiment",
-      NewCallback(this, &FlagsDOMHandler::HandleEnableFlagsExperimentMessage));
+      base::Bind(&FlagsDOMHandler::HandleEnableFlagsExperimentMessage,
+                 base::Unretained(this)));
   web_ui_->RegisterMessageCallback("restartBrowser",
-      NewCallback(this, &FlagsDOMHandler::HandleRestartBrowser));
+      base::Bind(&FlagsDOMHandler::HandleRestartBrowser,
+                 base::Unretained(this)));
 }
 
 void FlagsDOMHandler::HandleRequestFlagsExperiments(const ListValue* args) {