Materialized the font/icon color for some default rows in the system menu.

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 7cbd3d7e7332d202e7f235730c187f3e08c0d788..78d9f976e2cc045dbc956b33d11b822be219a630 100644
--- a/ash/common/system/ime/tray_ime_chromeos.cc
+++ b/ash/common/system/ime/tray_ime_chromeos.cc
@@ -17,6 +17,7 @@
 #include "ash/common/system/tray/tray_details_view.h"
 #include "ash/common/system/tray/tray_item_more.h"
 #include "ash/common/system/tray/tray_item_view.h"
+#include "ash/common/system/tray/tray_popup_item_style.h"
 #include "ash/common/system/tray/tray_utils.h"
 #include "ash/common/system/tray_accessibility.h"
 #include "ash/common/wm_shell.h"
@@ -88,6 +89,19 @@ class IMEDefaultView : public TrayItemMore {
     SetAccessibleName(label);
   }
 
+ protected:
+  // TrayItemMore:
+  void UpdateStyle() override {
+    TrayItemMore::UpdateStyle();
+
+    if (!MaterialDesignController::IsSystemTrayMenuMaterial())
+      return;
+
+    std::unique_ptr<TrayPopupItemStyle> style = CreateStyle();
+    SetImage(gfx::CreateVectorIcon(kSystemMenuKeyboardIcon,
+                                   style->GetForegroundColor()));
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(IMEDefaultView);
 };