Support comma separated hardware keyboard layout.

chromeos/ime/input_method_delegate.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_IME_INPUT_METHOD_DELEGATE_H_
 #define CHROMEOS_IME_INPUT_METHOD_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 
 namespace chromeos {
 namespace input_method {
 
 // Provides access to read/persist Input Method-related properties.
 class InputMethodDelegate {
  public:
   InputMethodDelegate() {}
   virtual ~InputMethodDelegate() {}
 
-  // Retrieves the hardware keyboard layout ID. May return an empty string if
-  // the ID is unknown.
-  virtual std::string GetHardwareKeyboardLayout() const = 0;
+  // Retrieves the hardware keyboard layout IDs. May return an empty list if
+  // the IDs are unknown.
+  virtual void GetHardwareKeyboardLayout(

[Alexander Alekseev, 2014/02/11 13:36:02]

virtual const std::vector<std::string>& GetHardwareKeyboardLayouts() const = 0;

?

[Seigo Nonaka, 2014/02/12 13:21:02]

Done.

[Alexander Alekseev, 2014/02/12 14:45:35]

Let's return "const std::string&" here, and split in InputMethodUtil.

+      std::vector<std::string>* out) const = 0;
 
   // Retrieves localized string for |resource_id|.
   virtual base::string16 GetLocalizedString(int resource_id) const = 0;
 
   // Converts a language code to a language display name, using the
   // current application locale.
   // Examples: "fi"    => "Finnish"
   //           "en-US" => "English (United States)"
   virtual base::string16 GetDisplayLanguageName(
       const std::string& language_code) const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InputMethodDelegate);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROMEOS_IME_INPUT_METHOD_DELEGATE_H_