Remove --load-2x-resources flag.

ui/base/ui_base_switches.cc

Index: ui/base/ui_base_switches.cc
diff --git a/ui/base/ui_base_switches.cc b/ui/base/ui_base_switches.cc
index 92c2be924b8ce5234ad552ea04e9e75e38e6f300..0b9c3f572e58e608b7b8ee94a89405bd5946a965 100644
--- a/ui/base/ui_base_switches.cc
+++ b/ui/base/ui_base_switches.cc
@@ -39,10 +39,6 @@ const char kHighlightMissing2xResources[] =
 // language[-country] where language is the 2 letter code from ISO-639.
 const char kLang[] = "lang";
 
-// Loads 2x resources. These resource paks currently contain
-// mix of 1x and 2x and loading them may break the UI on 2x display.
-const char kLoad2xResources[] = "load-2x-resources";
-
 // Load the locale resources from the given path. When running on Mac/Unix the
 // path should point to a locale.pak file.
 const char kLocalePak[] = "locale_pak";