Make GTK and Aura parts orthogonal to OS parts

chrome/browser/chrome_browser_main_mac.h

Index: chrome/browser/chrome_browser_main_mac.h
diff --git a/chrome/browser/chrome_browser_main_mac.h b/chrome/browser/chrome_browser_main_mac.h
index cf710459921e4d65782099cdf7edadb24bf43427..2ba7e7bfca1cc89041bd812adb3aa1bb2d7e75e6 100644
--- a/chrome/browser/chrome_browser_main_mac.h
+++ b/chrome/browser/chrome_browser_main_mac.h
@@ -12,9 +12,13 @@ class ChromeBrowserMainPartsMac : public ChromeBrowserMainPartsPosix {
  public:
   explicit ChromeBrowserMainPartsMac(const MainFunctionParams& parameters);
 
+  // BrowserParts overrides.
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PreMainMessageLoopStart() OVERRIDE;
 
+  // ChromeBrowserMainParts overrides.
+  virtual void ShowMissingLocaleMessageBox() OVERRIDE;
+
   // Perform platform-specific work that needs to be done after the main event
   // loop has ended. The embedder must be sure to call this.
   static void DidEndMainMessageLoop();