Fixes unittests with --enable-text-input-focus-manager flag enabled.

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 "ui/base/ime/input_method_delegate.h"
@@ skipping 142 matching lines @@
                  AsWeakPtr()));
 }
 
 void InputMethodBase::OnCandidateWindowHidden() {
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&InputMethodBase::CandidateWindowHiddenCallback, AsWeakPtr()));
 }
 
 void InputMethodBase::CandidateWindowShownCallback() {
-  if (text_input_client_)
-    text_input_client_->OnCandidateWindowShown();
+  if (TextInputClient* text_input_client = GetTextInputClient())
+    text_input_client->OnCandidateWindowShown();
 }
 
 void InputMethodBase::CandidateWindowUpdatedCallback() {
-  if (text_input_client_)
-    text_input_client_->OnCandidateWindowUpdated();
+  if (TextInputClient* text_input_client = GetTextInputClient())
+    text_input_client->OnCandidateWindowUpdated();
 }
 
 void InputMethodBase::CandidateWindowHiddenCallback() {
-  if (text_input_client_)
-    text_input_client_->OnCandidateWindowHidden();
+  if (TextInputClient* text_input_client = GetTextInputClient())
+    text_input_client->OnCandidateWindowHidden();
 }
 
 }  // namespace ui