Extract a delegate interface from c/b/input_method to permit decoupling from c/b.

chrome/browser/chromeos/input_method/input_method_delegate_impl.h

+// Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_DELEGATE_IMPL_H_
+#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_DELEGATE_IMPL_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/chromeos/input_method/input_method_delegate.h"
+
+namespace chromeos {
+namespace input_method {
+
+// Persists input method changes to the BrowserProcess local state or to the
+// user preferences, as appropriate. Accesses the hardware keyboard layout and
+// application locale from the BrowserProcess.
+class InputMethodDelegateImpl : public InputMethodDelegate {
+ public:
+  InputMethodDelegateImpl();
+
+  // InputMethodDelegate implementation.
+  virtual void SetSystemInputMethod(
+      const std::string& input_method) OVERRIDE;
+  virtual void SetUserInputMethod(const std::string& input_method) OVERRIDE;
+  virtual std::string GetHardwareKeyboardLayout() const OVERRIDE;
+  virtual std::string GetActiveLocale() const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputMethodDelegateImpl);
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_DELEGATE_IMPL_H_