Cleanup mojo Wallpaper interfaces for mash.

ash/default_wallpaper_delegate.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/default_wallpaper_delegate.h"
 
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ui/wm/core/window_animations.h"
 
@@ skipping 13 matching lines @@
 bool DefaultWallpaperDelegate::ShouldShowInitialAnimation() {
   return false;
 }
 
 void DefaultWallpaperDelegate::UpdateWallpaper(bool clear_cache) {}
 
 void DefaultWallpaperDelegate::InitializeWallpaper() {
   WmShell::Get()->wallpaper_controller()->CreateEmptyWallpaper();
 }
 
-void DefaultWallpaperDelegate::OpenSetWallpaperPage() {}
-
 bool DefaultWallpaperDelegate::CanOpenSetWallpaperPage() {
   return false;
 }
 
 void DefaultWallpaperDelegate::OnWallpaperAnimationFinished() {}
 
 void DefaultWallpaperDelegate::OnWallpaperBootAnimationFinished() {}
 
 }  // namespace ash