Revert of Enable icu_use_data_file_flag on CrOS

ui/base/resource/resource_bundle.cc

Index: ui/base/resource/resource_bundle.cc
diff --git a/ui/base/resource/resource_bundle.cc b/ui/base/resource/resource_bundle.cc
index aa0b6f5de93daceedf60dc922d26a07d504ad034..46db04e4c4b5dde561bce5b0519ff7cdf4fee413 100644
--- a/ui/base/resource/resource_bundle.cc
+++ b/ui/base/resource/resource_bundle.cc
@@ -68,15 +68,14 @@
 
 void InitDefaultFontList() {
 #if defined(OS_CHROMEOS)
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  std::string font_family = base::UTF16ToUTF8(
-      rb.GetLocalizedString(IDS_UI_FONT_FAMILY_CROS));
-  gfx::FontList::SetDefaultFontDescription(font_family);
+  gfx::FontList::SetDefaultFontDescription(
+      l10n_util::GetStringUTF8(IDS_UI_FONT_FAMILY_CROS));
 
   // TODO(yukishiino): Remove SetDefaultFontDescription() once the migration to
   // the font list is done.  We will no longer need SetDefaultFontDescription()
   // after every client gets started using a FontList instead of a Font.
-  gfx::PlatformFontPango::SetDefaultFontDescription(font_family);
+  gfx::PlatformFontPango::SetDefaultFontDescription(
+      l10n_util::GetStringUTF8(IDS_UI_FONT_FAMILY_CROS));
 #else
   // Use a single default font as the default font list.
   gfx::FontList::SetDefaultFontDescription(std::string());