Show tooltips in SHELF_AUTO_HIDE ShelfVisibilityState.

ash/common/shelf/shelf_tooltip_manager.cc

 // Copyright 2013 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 "ash/common/shelf/shelf_tooltip_manager.h"
 
 #include "ash/common/shelf/shelf_view.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm_lookup.h"
@@ skipping 232 matching lines @@
     // AutoHide state change happens during an event filter, so immediate close
     // may cause a crash in the HandleMouseEvent() after the filter.  So we just
     // schedule the Close here.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&ShelfTooltipManager::Close, weak_factory_.GetWeakPtr()));
   }
 }
 
 bool ShelfTooltipManager::ShouldShowTooltipForView(views::View* view) {
-  return shelf_view_ && shelf_view_->ShouldShowTooltipForView(view) &&
-         shelf_view_->wm_shelf()->GetVisibilityState() == SHELF_VISIBLE;
+  WmShelf* shelf = shelf_view_ ? shelf_view_->wm_shelf() : nullptr;
+  return shelf && shelf_view_->ShouldShowTooltipForView(view) &&
+         (shelf->GetVisibilityState() == SHELF_VISIBLE ||
+          (shelf->GetVisibilityState() == SHELF_AUTO_HIDE &&
+           shelf->GetAutoHideState() == SHELF_AUTO_HIDE_SHOWN));
 }
 
 }  // namespace ash