Linux UI: Add IsVisibleOnAllWorkspaces()

ui/views/widget/native_widget_mac.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/native_widget_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include <utility>
 
@@ skipping 445 matching lines @@
 }
 
 bool NativeWidgetMac::IsAlwaysOnTop() const {
   return gfx::IsNSWindowAlwaysOnTop(GetNativeWindow());
 }
 
 void NativeWidgetMac::SetVisibleOnAllWorkspaces(bool always_visible) {
   gfx::SetNSWindowVisibleOnAllWorkspaces(GetNativeWindow(), always_visible);
 }
 
+bool NativeWidgetMac::IsVisibleOnAllWorkspaces() const {
+  return false;
+}
+
 void NativeWidgetMac::Maximize() {
   NOTIMPLEMENTED();  // See IsMaximized().
 }
 
 void NativeWidgetMac::Minimize() {
   NSWindow* window = GetNativeWindow();
   // Calling performMiniaturize: will momentarily highlight the button, but
   // AppKit will reject it if there is no miniaturize button.
   if ([window styleMask] & NSMiniaturizableWindowMask)
     [window performMiniaturize:nil];
@@ skipping 282 matching lines @@
   [[ViewsNSWindowCloseAnimator alloc] initWithWindow:window];
 }
 
 - (void)animationDidEnd:(NSAnimation*)animation {
   [window_ close];
   [animation_ setDelegate:nil];
   [self release];
 }
 
 @end