Makes the InputMethodEngine can be switched per profile when the top-level browser window is switch…

chrome/browser/ui/input_method/input_method_engine_base.cc

 // Copyright 2016 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 "chrome/browser/ui/input_method/input_method_engine_base.h"
 
 #include <memory>
 
 #undef FocusIn
 #undef FocusOut
@@ skipping 330 matching lines @@
         base::UTF16ToUTF8(composition_text_->text));
   composition_text_.reset(new ui::CompositionText());
   observer_->OnDeactivated(active_component_id_);
 }
 
 void InputMethodEngineBase::Reset() {
   composition_text_.reset(new ui::CompositionText());
   observer_->OnReset(active_component_id_);
 }
 
+void InputMethodEngineBase::MaybeSwitchEngine() {
+  observer_->OnRequestEngineSwitch();
+}
+
 bool InputMethodEngineBase::IsInterestedInKeyEvent() const {
   return observer_->IsInterestedInKeyEvent();
 }
 
 void InputMethodEngineBase::ProcessKeyEvent(const ui::KeyEvent& key_event,
                                             KeyEventDoneCallback& callback) {
   // Make true that we don't handle IME API calling of setComposition and
   // commitText while the extension is handling key event.
   handling_key_event_ = true;
 
@@ skipping 94 matching lines @@
         ui::EventTimeForNow());
     base::AutoReset<const ui::KeyEvent*> reset_sent_key(&sent_key_event_,
                                                         &ui_event);
     if (!SendKeyEvent(&ui_event, event.code))
       return false;
   }
   return true;
 }
 
 }  // namespace input_method