Add chrome://site-engagement WebUI.

chrome/common/chrome_switches.cc

 // 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 1388 matching lines @@
 bool SettingsWindowEnabled() {
 #if defined(OS_CHROMEOS)
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       ::switches::kDisableSettingsWindow);
 #else
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       ::switches::kEnableSettingsWindow);
 #endif
 }
 
+bool SiteEngagementServiceEnabled() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      kEnableSiteEngagementService);
+}
+
 #if defined(OS_CHROMEOS)
 bool PowerOverlayEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       ::switches::kEnablePowerOverlay);
 }
 #endif
 
 #if defined(ENABLE_TASK_MANAGER)
 bool NewTaskManagerEnabled() {
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       kDisableNewTaskManager);
 }
 #endif  // defined(ENABLE_TASK_MANAGER)
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches