Use input method to control visibility of virtual keyboard

views/ime/input_method_ibus.cc

Index: views/ime/input_method_ibus.cc
diff --git a/views/ime/input_method_ibus.cc b/views/ime/input_method_ibus.cc
index 958e3dfdcfb0aa9c6e40d5cbfc4848e5507e886f..5dbdf202baf3370dd368cea0d9c7d6b51a325388 100644
--- a/views/ime/input_method_ibus.cc
+++ b/views/ime/input_method_ibus.cc
@@ -369,6 +369,7 @@ void InputMethodIBus::DispatchKeyEvent(const KeyEvent& key) {
 }
 
 void InputMethodIBus::OnTextInputTypeChanged(View* view) {
+  InputMethodBase::OnTextInputTypeChanged(view);
   if (context_ && IsViewFocused(view)) {
     ResetContext();
     UpdateContextFocusState();
@@ -413,7 +414,9 @@ base::i18n::TextDirection InputMethodIBus::GetInputTextDirection() {
 }
 
 bool InputMethodIBus::IsActive() {
-  return context_ != NULL;
+  // We always need to receive TextInputTypeChanged signal,
+  // so just return true here.
+  return true;
 }
 
 // static
@@ -582,7 +585,7 @@ void InputMethodIBus::ResetContext() {
 }
 
 void InputMethodIBus::UpdateContextFocusState() {
-  if (!context_) {
+  if (!context_ || !widget_focused()) {
     context_focused_ = false;
     UpdateFakeContextFocusState();
     return;