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 3f38b4e1ea7ab23a2eb4798d2317b817c3c44298..2834b3f9e5dd986e798d6d0f38658bd164ab2586 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());
 }
 
@@ -63,9 +63,14 @@ 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());
+    event->StopPropagation();

[sky, 2016/08/25 20:17:53]

I tend to think this should be in InputMethodMus::DispatchKeyEvent. It seems
clearer that way as InputMethodMus can then document why it needs to stop
propagation.

[Hadi, 2016/08/26 15:57:07]

Move it. Also I added a temporary check so we only send char events to the IME
driver, so accelerators work for now. I'll investigate the options we have to
properly fix this, and then remove that check.

     return;
   }
   WindowTreeHostPlatform::DispatchEvent(event);