IME for Mus: Make InputMethodMus use the IME Mojo API.

ui/views/mus/window_tree_host_mus.cc

Index: ui/views/mus/window_tree_host_mus.cc
diff --git a/ui/views/mus/window_tree_host_mus.cc b/ui/views/mus/window_tree_host_mus.cc
index 47f51e6b78e7093f05cd8cb6d0d7af27b4cfd8ba..375883128f04f8e7ecb605b146015fcf7c63843c 100644
--- a/ui/views/mus/window_tree_host_mus.cc
+++ b/ui/views/mus/window_tree_host_mus.cc
@@ -54,7 +54,7 @@ WindowTreeHostMus::WindowTreeHostMus(NativeWidgetMus* native_widget,
   dispatcher()->set_transform_events(false);
   compositor()->SetHostHasTransparentBackground(true);
 
-  input_method_.reset(new InputMethodMUS(this, window));
+  input_method_.reset(new InputMethodMus(this, window));
   SetSharedInputMethod(input_method_.get());
 }
 
@@ -63,6 +63,10 @@ WindowTreeHostMus::~WindowTreeHostMus() {
   DestroyDispatcher();
 }
 
+void WindowTreeHostMus::InitInputMethod(shell::Connector* connector) {
+  input_method_->Init(connector);
+}
+
 void WindowTreeHostMus::DispatchEvent(ui::Event* event) {
   if (event->IsKeyEvent() && GetInputMethod()) {
     GetInputMethod()->DispatchKeyEvent(event->AsKeyEvent());