Make limitations for input.ime.sendKeyEvents API.

ui/base/ime/mock_input_method.cc

Index: ui/base/ime/mock_input_method.cc
diff --git a/ui/base/ime/mock_input_method.cc b/ui/base/ime/mock_input_method.cc
index f2cf8ebc67f5c4a29848e5740006f573c640027d..9e91492faf4c62f32948387b982ef208a10557e3 100644
--- a/ui/base/ime/mock_input_method.cc
+++ b/ui/base/ime/mock_input_method.cc
@@ -116,4 +116,8 @@ void MockInputMethod::RemoveObserver(InputMethodObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+std::vector<ui::KeyEvent*> MockInputMethod::GetKeyEventsForTest() {
+  return std::vector<ui::KeyEvent*>();
+}
+
 }  // namespace ui