Support comma separated hardware keyboard layout.

chrome/browser/chromeos/input_method/input_method_util.h

Index: chrome/browser/chromeos/input_method/input_method_util.h
diff --git a/chrome/browser/chromeos/input_method/input_method_util.h b/chrome/browser/chromeos/input_method/input_method_util.h
index 50092b456a93b389ca348095a887ea885ef3cbd0..e690b9b22f0c44b0fa19b9e694ef36533d405efe 100644
--- a/chrome/browser/chromeos/input_method/input_method_util.h
+++ b/chrome/browser/chromeos/input_method/input_method_util.h
@@ -97,12 +97,12 @@ class InputMethodUtil {
   // Returns empty string on error.
   std::string GetLanguageDefaultInputMethodId(const std::string& language_code);
 
-  // Returns the input method ID of the hardware keyboard. e.g. "xkb:us::eng"
-  // for the US Qwerty keyboard.
-  std::string GetHardwareInputMethodId() const;
+  // Fills the input method IDs of the hardware keyboard. e.g. "xkb:us::eng"
+  // for the US Qwerty keyboard. |out| must not be NULL.
+  void GetHardwareInputMethodIds(std::vector<std::string>* out) const;
 
   // Returns the login-allowed input method ID of the hardware keyboard.
-  std::string GetHardwareLoginInputMethodId() const;
+  void GetHardwareLoginInputMethodId(std::vector<std::string>* out) const;
 
   // Returns true if given input method can be used to input login data.
   bool IsLoginKeyboard(const std::string& input_method_id) const;