ash: Remove old OEM wallpaper flags.

chrome/browser/chromeos/extensions/wallpaper_private_api.cc

Index: chrome/browser/chromeos/extensions/wallpaper_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/wallpaper_private_api.cc b/chrome/browser/chromeos/extensions/wallpaper_private_api.cc
index 71eb8323e800c3863823280de7bdf21d05994353..a27d4b45504c247b0c29ae5eab45f0599aca9e1e 100644
--- a/chrome/browser/chromeos/extensions/wallpaper_private_api.cc
+++ b/chrome/browser/chromeos/extensions/wallpaper_private_api.cc
@@ -57,9 +57,7 @@ const char kWallpaperManifestBaseURL[] = "https://commondatastorage.googleapis."
 
 bool IsOEMDefaultWallpaper() {
   return CommandLine::ForCurrentProcess()->HasSwitch(
-      ash::switches::kAshDefaultWallpaperIsOem) ||
-      CommandLine::ForCurrentProcess()->HasSwitch(
-          ash::switches::kAshOemWallpaperSmall);
+      ash::switches::kAshDefaultWallpaperIsOem);
 }
 
 // Saves |data| as |file_name| to directory with |key|. Return false if the
@@ -622,12 +620,8 @@ bool WallpaperPrivateGetThumbnailFunction::RunImpl() {
     // TODO(bshe): Small resolution wallpaper is used here as wallpaper
     // thumbnail. We should either resize it or include a wallpaper thumbnail in
     // addition to large and small wallpaper resolutions.
-    thumbnail_path = CommandLine::ForCurrentProcess()->HasSwitch(
-        ash::switches::kAshDefaultWallpaperIsOem) ?
-        CommandLine::ForCurrentProcess()->GetSwitchValuePath(
-            ash::switches::kAshDefaultWallpaperSmall) :
-        CommandLine::ForCurrentProcess()->GetSwitchValuePath(
-            ash::switches::kAshOemWallpaperSmall);
+    thumbnail_path = CommandLine::ForCurrentProcess()->GetSwitchValuePath(
+        ash::switches::kAshDefaultWallpaperSmall);
   }
 
   sequence_token_ = BrowserThread::GetBlockingPool()->