Added command line switches and UI (controlled via a build option)

chrome/browser/ui/toolbar/wrench_menu_model.cc

Index: chrome/browser/ui/toolbar/wrench_menu_model.cc
diff --git a/chrome/browser/ui/toolbar/wrench_menu_model.cc b/chrome/browser/ui/toolbar/wrench_menu_model.cc
index 2028512925d8e5cf7101b77cc257a2d1c4a72562..3ac7b07f5c16bb84439c740f1c0cb7a7054750b5 100644
--- a/chrome/browser/ui/toolbar/wrench_menu_model.cc
+++ b/chrome/browser/ui/toolbar/wrench_menu_model.cc
@@ -30,6 +30,7 @@
 #include "chrome/common/notification_source.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/pref_names.h"
+#include "chrome/common/profiling.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
@@ -184,6 +185,11 @@ void ToolsMenuModel::Build(Browser* browser) {
     AddItemWithStringId(IDC_DEV_TOOLS, IDS_DEV_TOOLS);
     AddItemWithStringId(IDC_DEV_TOOLS_CONSOLE, IDS_DEV_TOOLS_CONSOLE);
   }
+
+#if defined(ENABLE_PROFILING) || !defined(NO_TCMALLOC)
+  AddSeparator();
+  AddCheckItemWithStringId(IDC_PROFILING_ENABLED, IDS_PROFILING_ENABLED);
+#endif
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -279,6 +285,8 @@ void WrenchMenuModel::ExecuteCommand(int command_id) {
 bool WrenchMenuModel::IsCommandIdChecked(int command_id) const {
   if (command_id == IDC_SHOW_BOOKMARK_BAR) {
     return browser_->profile()->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar);
+  } else if (command_id == IDC_PROFILING_ENABLED) {
+    return Profiling::BeingProfiled();
   }
 
   return false;