Makes sure the keyboard typing isn't blocked when InputMethod::OnFocus() is not correctly called.

ui/base/ime/mock_input_method.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/mock_input_method.h"
 
 #include "ui/base/ime/input_method_delegate.h"
+#include "ui/base/ime/input_method_log_collector.h"
 #include "ui/events/event.h"
 
 namespace ui {
 
 MockInputMethod::MockInputMethod(internal::InputMethodDelegate* delegate)
     : text_input_client_(NULL), delegate_(delegate) {
 }
 
 MockInputMethod::~MockInputMethod() {
   FOR_EACH_OBSERVER(InputMethodObserver, observer_list_,
@@ skipping 91 matching lines @@
 }
 
 void MockInputMethod::AddObserver(InputMethodObserver* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void MockInputMethod::RemoveObserver(InputMethodObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+InputMethodLogCollector* MockInputMethod::GetLogCollector() {
+  return nullptr;
+}
+
 }  // namespace ui