Revert DidEndMainMessageLoop changes from my earlier checkin since they caused issues on Mac.

chrome/browser/chrome_browser_main_mac.mm

Index: chrome/browser/chrome_browser_main_mac.mm
===================================================================
--- chrome/browser/chrome_browser_main_mac.mm	(revision 101397)
+++ chrome/browser/chrome_browser_main_mac.mm	(working copy)
@@ -24,6 +24,15 @@
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/resource/resource_bundle.h"
 
+namespace content {
+
+void DidEndMainMessageLoop() {
+  AppController* appController = [NSApp delegate];
+  [appController didEndMainMessageLoop];
+}
+
+}
+
 void RecordBreakpadStatusUMA(MetricsService* metrics) {
   metrics->RecordBreakpadRegistration(IsCrashReporterEnabled());
   metrics->RecordBreakpadHasDebugger(base::debug::BeingDebugged());
@@ -127,10 +136,3 @@
   [[NSUserDefaults standardUserDefaults]
       setObject:@"NO" forKey:@"NSTreatUnknownArgumentsAsOpen"];
 }
-
-void ChromeBrowserMainPartsMac::PostMainMessageLoopRun() {
-  ChromeBrowserMainPartsPosix::PostMainMessageLoopRun();
-
-  //AppController* appController = [NSApp delegate];
-  //[appController didEndMainMessageLoop];
-}