ash: Remove old OEM wallpaper flags.

ash/desktop_background/desktop_background_controller.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/desktop_background/desktop_background_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/desktop_background/desktop_background_controller_observer.h"
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/desktop_background/desktop_background_widget_controller.h"
@@ skipping 206 matching lines @@
       IDR_AURA_WALLPAPER_DEFAULT_SMALL;
   WallpaperLayout resource_layout = WALLPAPER_LAYOUT_TILE;
 
   CommandLine* command_line = command_line_for_testing_ ?
       command_line_for_testing_ : CommandLine::ForCurrentProcess();
   const char* switch_name = NULL;
   if (is_guest) {
     switch_name = use_large ? switches::kAshGuestWallpaperLarge :
         switches::kAshGuestWallpaperSmall;
   } else {
-    const char* oem_switch_name = use_large ? switches::kAshOemWallpaperLarge :
-        switches::kAshOemWallpaperSmall;
-    const char* default_switch_name = use_large ?
-        switches::kAshDefaultWallpaperLarge :
+    switch_name = use_large ? switches::kAshDefaultWallpaperLarge :
         switches::kAshDefaultWallpaperSmall;
-    switch_name = command_line->HasSwitch(oem_switch_name) ? oem_switch_name :
-        default_switch_name;
   }
   file_path = command_line->GetSwitchValuePath(switch_name);
 
   if (DefaultWallpaperIsAlreadyLoadingOrLoaded(file_path, resource_id))
     return false;
 
   CancelPendingWallpaperOperation();
   wallpaper_loader_ = new WallpaperLoader(
       file_path, file_layout, resource_id, resource_layout);
   base::WorkerPool::PostTaskAndReply(
@@ skipping 211 matching lines @@
         iter->rotation() == gfx::Display::ROTATE_270) {
       size_in_pixel = gfx::Size(size_in_pixel.height(), size_in_pixel.width());
     }
     width = std::max(size_in_pixel.width(), width);
     height = std::max(size_in_pixel.height(), height);
   }
   return gfx::Size(width, height);
 }
 
 }  // namespace ash