Implement RemovableDeviceNotifications for Mac

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 39ea9360715142ea4f88edee49d8170f10c003d7..d5ee7981600de5d651605837cc34623e6c78650f 100644
--- a/chrome/browser/chrome_browser_main_mac.h
+++ b/chrome/browser/chrome_browser_main_mac.h
@@ -7,20 +7,29 @@
 
 #include "chrome/browser/chrome_browser_main_posix.h"
 
+namespace chrome {
+class RemovableDeviceNotificationsMac;
+}
+
 class ChromeBrowserMainPartsMac : public ChromeBrowserMainPartsPosix {
  public:
   explicit ChromeBrowserMainPartsMac(
       const content::MainFunctionParams& parameters);
+  virtual ~ChromeBrowserMainPartsMac();
 
   // BrowserParts overrides.
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PreMainMessageLoopStart() OVERRIDE;
+  virtual void PreProfileInit() 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();
 
  private:
+  scoped_ptr<chrome::RemovableDeviceNotificationsMac>
+      removable_device_notifications_mac_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainPartsMac);
 };