Implement sync of keyboard layout between Ozone and Wayland clients

ui/base/ime/chromeos/ime_keyboard.cc

 // Copyright 2014 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.
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "ui/base/ime/chromeos/ime_keyboard.h"
 
 namespace chromeos {
@@ skipping 57 matching lines @@
 }
 
 void ImeKeyboard::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void ImeKeyboard::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
+bool ImeKeyboard::SetCurrentKeyboardLayoutByName(
+    const std::string& layout_name) {
+  for (ImeKeyboard::Observer& observer : observers_)
+    observer.OnLayoutChanging(layout_name);
+  return true;
+}
+
 void ImeKeyboard::SetCapsLockEnabled(bool enable_caps_lock) {
   bool old_state = caps_lock_is_enabled_;
   caps_lock_is_enabled_ = enable_caps_lock;
   if (old_state != enable_caps_lock) {
     for (ImeKeyboard::Observer& observer : observers_)
       observer.OnCapsLockChanged(enable_caps_lock);
   }
 }
 
 bool ImeKeyboard::CapsLockIsEnabled() {
@@ skipping 11 matching lines @@
 bool ImeKeyboard::IsAltGrAvailable() const {
   for (size_t i = 0; i < arraysize(kAltGrLayoutIds); ++i) {
     if (last_layout_ == kAltGrLayoutIds[i])
       return true;
   }
   return false;
 }
 
 }  // namespace input_method
 }  // namespace chromeos