NSSwitchButton deprecated by Apple.

In this change, `NSSwitchButton` is replaced with `NSButtonTypeSwitch`,
as suggested in the reference documentation.

chromium_src/chrome/browser/ui/cocoa/first_run_dialog_controller.mm

@@ -97,7 +97,7 @@ - (void)loadView {
           IDS_FIRSTRUN_DLG_PIN_SHORTCUT_TEXT);
   base::i18n::AdjustStringForLocaleDirection(&dockCheckboxString);
   _dockCheckbox = [[NSButton alloc] init];
-  [_dockCheckbox setButtonType:NSSwitchButton];
+  [_dockCheckbox setButtonType:NSButtonTypeSwitch];
   [_dockCheckbox setTitle:base::SysUTF16ToNSString(dockCheckboxString)];
   [_dockCheckbox setFont:[NSFont systemFontOfSize:14.0
                                            weight:NSFontWeightRegular]];