Limit display of the virtual keyboard to state changes triggered from a user gesture.

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 62 matching lines @@
 TextInputMode InputMethodBase::GetTextInputMode() const {
   TextInputClient* client = GetTextInputClient();
   return client ? client->GetTextInputMode() : TEXT_INPUT_MODE_DEFAULT;
 }
 
 bool InputMethodBase::CanComposeInline() const {
   TextInputClient* client = GetTextInputClient();
   return client ? client->CanComposeInline() : true;
 }
 
+void InputMethodBase::ShowImeIfNeeded() {
+  FOR_EACH_OBSERVER(InputMethodObserver,
+                    observer_list_,
+                    OnShowImeIfNeeded());

[Seigo Nonaka, 2014/01/09 06:08:43]

nit: can be one line?

[kevers, 2014/01/09 15:29:09]

Done.

+}
+
 void InputMethodBase::AddObserver(InputMethodObserver* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void InputMethodBase::RemoveObserver(InputMethodObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 bool InputMethodBase::IsTextInputClientFocused(const TextInputClient* client) {
   return client && (client == GetTextInputClient());
@@ skipping 67 matching lines @@
   if (text_input_client_)
     text_input_client_->OnCandidateWindowUpdated();
 }
 
 void InputMethodBase::CandidateWindowHiddenCallback() {
   if (text_input_client_)
     text_input_client_->OnCandidateWindowHidden();
 }
 
 }  // namespace ui