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

ui/base/ime/input_method_base.cc

 // 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.
 
 #include "ui/base/ime/input_method_base.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 16 matching lines @@
   if (ui::IMEBridge::Get() &&
       ui::IMEBridge::Get()->GetInputContextHandler() == this)
     ui::IMEBridge::Get()->SetInputContextHandler(nullptr);
 }
 
 void InputMethodBase::SetDelegate(internal::InputMethodDelegate* delegate) {
   delegate_ = delegate;
 }
 
 void InputMethodBase::OnFocus() {
-  if (ui::IMEBridge::Get())
+  if (ui::IMEBridge::Get()) {
     ui::IMEBridge::Get()->SetInputContextHandler(this);
+    ui::IMEEngineHandlerInterface* engine =
+        ui::IMEBridge::Get()->GetCurrentEngineHandler();
+    if (engine)
+      engine->MaybeSwitchEngine();
+  }
 }
 
 void InputMethodBase::OnBlur() {
   if (ui::IMEBridge::Get() &&
       ui::IMEBridge::Get()->GetInputContextHandler() == this)
     ui::IMEBridge::Get()->SetInputContextHandler(nullptr);
 }
 
 void InputMethodBase::SetFocusedTextInputClient(TextInputClient* client) {
   SetFocusedTextInputClientInternal(client);
@@ skipping 167 matching lines @@
 InputMethod* InputMethodBase::GetInputMethod() {
   return this;
 }
 
 const std::vector<std::unique_ptr<ui::KeyEvent>>&
 InputMethodBase::GetKeyEventsForTesting() {
   return key_events_for_testing_;
 }
 
 }  // namespace ui