Prepare to enable icu_use_data_file_flat on CrOS

ui/base/l10n/l10n_util.h

Index: ui/base/l10n/l10n_util.h
diff --git a/ui/base/l10n/l10n_util.h b/ui/base/l10n/l10n_util.h
index 4eb6d58114f5a235e64b9a725a6fbd02e19352c9..d2c3f1e8a7e4449c3718549e67930e6be844be98 100644
--- a/ui/base/l10n/l10n_util.h
+++ b/ui/base/l10n/l10n_util.h
@@ -90,9 +90,17 @@ UI_BASE_EXPORT bool IsValidLocaleSyntax(const std::string& locale);
 //
 
 // Pulls resource string from the string bundle and returns it.
+// On Linux, RLM (right-to-left mark) is prepended to the string if
+// the locale is RTL and the string starts with a strong LTR character
+// but contains strong RTL characters. These functions require ICU to
+// be initialized on Linux/Chrome OS.
 UI_BASE_EXPORT std::string GetStringUTF8(int message_id);
 UI_BASE_EXPORT base::string16 GetStringUTF16(int message_id);
 
+// The same as above but without any RTL adjustment. Use it for
+// reading the default value of a preference.
+UI_BASE_EXPORT std::string GetStringUTF8Raw(int message_id);
+
 // Get a resource string and replace $i with replacements[i] for all
 // i < replacements.size(). Additionally, $$ is replaced by $.
 // If non-NULL |offsets| will be replaced with the start points of the replaced