Fix tooltips for Chrome OS shelf overflow icons.

ash/shelf/shelf_view.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 "ash/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "ash/ash_constants.h"
@@ skipping 1491 matching lines @@
   return this;
 }
 
 void ShelfView::GetAccessibleState(ui::AXViewState* state) {
   state->role = ui::AX_ROLE_TOOLBAR;
   state->name = l10n_util::GetStringUTF16(IDS_ASH_SHELF_ACCESSIBLE_NAME);
 }
 
 void ShelfView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
-  if (details.is_add && details.child == this && GetWidget())
+  if (details.is_add && details.child == this)
     tooltip_.Init();
 }
 
 void ShelfView::OnGestureEvent(ui::GestureEvent* event) {
   aura::Window* target_window = static_cast<views::View*>(event->target())
                                     ->GetWidget()
                                     ->GetNativeWindow();
   if (gesture_handler_.ProcessGestureEvent(*event, target_window))
     event->StopPropagation();
 }
@@ skipping 353 matching lines @@
 
 int ShelfView::CalculateShelfDistance(const gfx::Point& coordinate) const {
   const gfx::Rect bounds = GetBoundsInScreen();
   int distance = shelf_->SelectValueForShelfAlignment(
       bounds.y() - coordinate.y(), coordinate.x() - bounds.right(),
       bounds.x() - coordinate.x());
   return distance > 0 ? distance : 0;
 }
 
 }  // namespace ash