mash: Move ash/common/wm/shelf to ash/common/shelf

ash/aura/wm_shelf_aura.cc

 // Copyright 2016 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/aura/wm_shelf_aura.h"
 
 #include "ash/aura/wm_window_aura.h"
-#include "ash/common/wm/shelf/wm_shelf_observer.h"
+#include "ash/common/shelf/wm_shelf_observer.h"
 #include "ash/common/wm_window.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace wm {
 
 WmShelfAura::WmShelfAura(Shelf* shelf)
     : shelf_(shelf), shelf_layout_manager_(shelf->shelf_layout_manager()) {
   shelf_layout_manager_->AddObserver(this);
   shelf_->AddIconObserver(this);
 }
 
 WmShelfAura::~WmShelfAura() {
   shelf_->RemoveIconObserver(this);
   if (shelf_layout_manager_)
@@ skipping 42 matching lines @@
 void WmShelfAura::RemoveObserver(WmShelfObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void WmShelfAura::WillDeleteShelfLayoutManager() {
   shelf_layout_manager_->RemoveObserver(this);
   shelf_layout_manager_ = nullptr;
 }
 
 void WmShelfAura::OnBackgroundUpdated(
-    wm::ShelfBackgroundType background_type,
+    ShelfBackgroundType background_type,
     BackgroundAnimatorChangeType change_type) {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_,
                     OnBackgroundUpdated(background_type, change_type));
 }
 
 void WmShelfAura::WillChangeVisibilityState(ShelfVisibilityState new_state) {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_,
                     WillChangeVisibilityState(new_state));
 }
 
 void WmShelfAura::OnShelfIconPositionsChanged() {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_, OnShelfIconPositionsChanged());
 }
 
-}  // namespace wm
 }  // namespace ash