rlz: Hook up on mac, switch to chrome's network stack on win.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index 70b629afe20d696b97bd7e0ad5597a3fceeb6b3e..870c0000019bd222c5305067b08eb7afa8c720e0 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -166,6 +166,7 @@
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "chrome/browser/mac/install_from_dmg.h"
 #include "chrome/browser/mac/keystone_glue.h"
+#include "chrome/browser/rlz/rlz.h"
 #endif
 
 #if defined(TOOLKIT_VIEWS)
@@ -1609,7 +1610,9 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
         parsed_command_line());
   }
+#endif  // OS_WIN
 
+#if defined(OS_WIN) || defined(OS_MACOSX)
 #if defined(GOOGLE_CHROME_BUILD)
   // Init the RLZ library. This just binds the dll and schedules a task on the
   // file thread to be run sometime later. If this is the first run we record