fixup! fix(cdk-experimental/menu): move shared menu logic to base class

Author: mmalerba

src/material-experimental/menubar/menubar.spec.ts

@@ -39,15 +39,6 @@ describe('MatMenuBar', () => {
     expect(nativeMatMenubar.getAttribute('tabindex')).toBe('0');
   });
 
-  it('should toggle aria-orientation attribute', () => {
-    expect(nativeMatMenubar.getAttribute('aria-orientation')).toBe('horizontal');
-
-    matMenubar.orientation = 'vertical';
-    fixture.detectChanges();
-
-    expect(nativeMatMenubar.getAttribute('aria-orientation')).toBe('vertical');
-  });
-
   it('should toggle focused items on left/right click', () => {
     nativeMatMenubar.focus();
 

src/material-experimental/menubar/menubar.ts

@@ -27,10 +27,7 @@ import {
   encapsulation: ViewEncapsulation.None,
   changeDetection: ChangeDetectionStrategy.OnPush,
   host: {
-    'role': 'menubar',
-    'class': 'cdk-menu-bar mat-menubar',
-    'tabindex': '0',
-    '[attr.aria-orientation]': 'orientation',
+    '[class.mat-menubar]': 'true',
   },
   providers: [
     {provide: CdkMenuGroup, useExisting: MatMenuBar},