Add a Submit method to the keyboard interface

services/keyboard_native/keyboard_service_impl.cc

Index: services/keyboard_native/keyboard_service_impl.cc
diff --git a/services/keyboard_native/keyboard_service_impl.cc b/services/keyboard_native/keyboard_service_impl.cc
index 45a2fee2c22a951e1d3d0c4769a941952f080361..27321c0280194480e4f2304a3250fe14d8484db1 100644
--- a/services/keyboard_native/keyboard_service_impl.cc
+++ b/services/keyboard_native/keyboard_service_impl.cc
@@ -25,6 +25,12 @@ void KeyboardServiceImpl::ShowByRequest() {
 void KeyboardServiceImpl::Hide() {
 }
 
+void KeyboardServiceImpl::SetText(const mojo::String& text) {
+}
+
+void KeyboardServiceImpl::SetSelection(int32_t start, int32_t end) {
+}
+
 void KeyboardServiceImpl::OnKey(const char* key) {
   client_->CommitText(key, 1);
 }