[Mac] Enable MacViews site settings bubble behind --enable-mac-views-dialogs.

ui/views/bubble/bubble_delegate.cc

 // Copyright (c) 2012 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/bubble/bubble_delegate.h"
 
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 88 matching lines @@
   bubble_delegate->Init();
   // Get the latest anchor widget from the anchor view at bubble creation time.
   bubble_delegate->SetAnchorView(bubble_delegate->GetAnchorView());
   Widget* bubble_widget = CreateBubbleWidget(bubble_delegate);
 
 #if defined(OS_WIN)
   // If glass is enabled, the bubble is allowed to extend outside the bounds of
   // the parent frame and let DWM handle compositing.  If not, then we don't
   // want to allow the bubble to extend the frame because it will be clipped.
   bubble_delegate->set_adjust_if_offscreen(ui::win::IsAeroGlassEnabled());
-#elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
+#elif (defined(OS_LINUX) && !defined(OS_CHROMEOS)) || defined(OS_MACOSX)
   // Linux clips bubble windows that extend outside their parent window bounds.
+  // Mac never adjusts.
   bubble_delegate->set_adjust_if_offscreen(false);
 #endif
 
   bubble_delegate->SizeToContents();
   bubble_widget->AddObserver(bubble_delegate);
   return bubble_widget;
 }
 
 BubbleDelegateView* BubbleDelegateView::AsBubbleDelegate() {
   return this;
@@ skipping 193 matching lines @@
   // http://crbug.com/474622 for details.
   if (widget == GetWidget() && visible) {
     ui::AXViewState state;
     GetAccessibleState(&state);
     if (state.role == ui::AX_ROLE_ALERT_DIALOG)
       NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, true);
   }
 }
 
 }  // namespace views