[Ash] Remove non-MD code from ImeListView and ImeListItemView

ash/common/system/ime/tray_ime_chromeos.cc

Index: ash/common/system/ime/tray_ime_chromeos.cc
diff --git a/ash/common/system/ime/tray_ime_chromeos.cc b/ash/common/system/ime/tray_ime_chromeos.cc
index e764ea3fd757e1c156ed57f387b1f515efc890a9..501bd5316fa3cd9482d2e9580aca662cc6908ce7 100644
--- a/ash/common/system/ime/tray_ime_chromeos.cc
+++ b/ash/common/system/ime/tray_ime_chromeos.cc
@@ -70,6 +70,9 @@ class IMEDefaultView : public TrayItemMore {
   DISALLOW_COPY_AND_ASSIGN(IMEDefaultView);
 };
 
+// A list of available IMEs shown in the IME detailed view of the system menu,
+// along with other items in the title row (a settings button and optional
+// enterprise-controlled icon).
 class IMEDetailedView : public ImeListView {
  public:
   IMEDetailedView(SystemTrayItem* owner, LoginStatus login)