Cleanup ash shelf accessor functions.

ash/shelf/shelf_layout_manager.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_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <cstring>
 #include <string>
@@ skipping 526 matching lines @@
 bool ShelfLayoutManager::IsHorizontalAlignment() const {
   return GetAlignment() == SHELF_ALIGNMENT_BOTTOM ||
          GetAlignment() == SHELF_ALIGNMENT_TOP;
 }
 
 void ShelfLayoutManager::SetChromeVoxPanelHeight(int height) {
   chromevox_panel_height_ = height;
   LayoutShelf();
 }
 
-// static
-ShelfLayoutManager* ShelfLayoutManager::ForShelf(aura::Window* window) {
-  ShelfWidget* shelf = RootWindowController::ForShelf(window)->shelf();
-  return shelf ? shelf->shelf_layout_manager() : NULL;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // ShelfLayoutManager, private:
 
 ShelfLayoutManager::TargetBounds::TargetBounds()
     : opacity(0.0f), status_opacity(0.0f) {}
 
 ShelfLayoutManager::TargetBounds::~TargetBounds() {}
 
 void ShelfLayoutManager::SetState(ShelfVisibilityState visibility_state) {
   if (!shelf_->GetNativeView())
@@ skipping 621 matching lines @@
     return false;
   }
   if (session_state_delegate->IsUserSessionBlocked() ||
       state_.is_adding_user_screen) {
     return true;
   }
   return false;
 }
 
 }  // namespace ash