Fully enable about:tracking by default

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
===================================================================
--- chrome/browser/chrome_browser_main.cc	(revision 107816)
+++ chrome/browser/chrome_browser_main.cc	(working copy)
@@ -1217,6 +1217,13 @@
     browser_process_.reset(new BrowserProcessImpl(parsed_command_line()));
   }
 
+  if (parsed_command_line().HasSwitch(switches::kEnableTracking)) {
+    std::string flag =
+      parsed_command_line().GetSwitchValueASCII(switches::kEnableTracking);
+    if (flag.compare("0") == 0)
+       tracked_objects::ThreadData::InitializeAndSetTrackingStatus(false);
+  }
+
   // This forces the TabCloseableStateWatcher to be created and, on chromeos,
   // register for the notifications it needs to track the closeable state of
   // tabs.