Implement RemovableDeviceNotifications for Mac

chrome/browser/chrome_browser_main_mac.mm

Index: chrome/browser/chrome_browser_main_mac.mm
diff --git a/chrome/browser/chrome_browser_main_mac.mm b/chrome/browser/chrome_browser_main_mac.mm
index a9596638de7bf118d845c9d24bc3f1f8b3932247..1bd01a370bac24b7f683a26a39e9aa01a434c8af 100644
--- a/chrome/browser/chrome_browser_main_mac.mm
+++ b/chrome/browser/chrome_browser_main_mac.mm
@@ -20,6 +20,7 @@
 #include "chrome/browser/mac/keychain_reauthorize.h"
 #import "chrome/browser/mac/keystone_glue.h"
 #include "chrome/browser/metrics/metrics_service.h"
+#include "chrome/browser/system_monitor/removable_device_notifications_mac.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/common/main_function_params.h"
@@ -72,6 +73,9 @@ ChromeBrowserMainPartsMac::ChromeBrowserMainPartsMac(
     : ChromeBrowserMainPartsPosix(parameters) {
 }
 
+ChromeBrowserMainPartsMac::~ChromeBrowserMainPartsMac() {
+}
+
 void ChromeBrowserMainPartsMac::PreEarlyInitialization() {
   if (parsed_command_line().HasSwitch(switches::kKeychainReauthorize)) {
     if (base::mac::AmIBundled()) {
@@ -175,6 +179,12 @@ void ChromeBrowserMainPartsMac::PreMainMessageLoopStart() {
       setObject:@"NO" forKey:@"NSTreatUnknownArgumentsAsOpen"];
 }
 
+void ChromeBrowserMainPartsMac::PreProfileInit() {
+  removable_device_notifications_mac_.reset(
+      new chrome::RemovableDeviceNotificationsMac());
+  ChromeBrowserMainPartsPosix::PreProfileInit();
+}
+
 void ChromeBrowserMainPartsMac::DidEndMainMessageLoop() {
   AppController* appController = [NSApp delegate];
   [appController didEndMainMessageLoop];