chromeos: Rename ash::WmShelf to Shelf

ash/system/palette/palette_tray.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/system/palette/palette_tray.h"
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/resources/grit/ash_resources.h"
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_controller.h"
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/shell.h"
 #include "ash/strings/grit/ash_strings.h"
 #include "ash/system/palette/palette_tool_manager.h"
 #include "ash/system/palette/palette_utils.h"
 #include "ash/system/tray/system_menu_button.h"
 #include "ash/system/tray/system_tray_controller.h"
 #include "ash/system/tray/tray_bubble_wrapper.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_container.h"
 #include "ash/system/tray/tray_popup_header_button.h"
@@ skipping 106 matching lines @@
   // clicked.
   views::View* settings_button_;
   views::View* help_button_;
   PaletteTray* palette_tray_;
 
   DISALLOW_COPY_AND_ASSIGN(TitleView);
 };
 
 }  // namespace
 
-PaletteTray::PaletteTray(WmShelf* wm_shelf)
-    : TrayBackgroundView(wm_shelf),
+PaletteTray::PaletteTray(Shelf* shelf)
+    : TrayBackgroundView(shelf),
       palette_tool_manager_(new PaletteToolManager(this)),
       scoped_session_observer_(this),
       weak_factory_(this) {
   PaletteTool::RegisterToolInstances(palette_tool_manager_.get());
 
   SetInkDropMode(InkDropMode::ON);
   SetLayoutManager(new views::FillLayout());
   icon_ = new views::ImageView();
   UpdateTrayIcon();
 
@@ skipping 244 matching lines @@
     UpdateIconVisibility();
   }
 }
 
 void PaletteTray::UpdateIconVisibility() {
   SetVisible(is_palette_enabled_ && palette_utils::HasStylusInput() &&
              ShouldShowOnDisplay(this) && IsInUserSession());
 }
 
 }  // namespace ash