[ChromeOS] Show autofill popup after keyboard (if any) is shown.

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 fb1e6bac4678123c06c51b6cd6d0fbbdb2563de2..2265048e65d931425a42237a751d14033b6dc172 100644
--- a/ui/base/ime/mock_input_method.cc
+++ b/ui/base/ime/mock_input_method.cc
@@ -118,6 +118,13 @@ void MockInputMethod::ShowImeIfNeeded() {
   FOR_EACH_OBSERVER(InputMethodObserver, observer_list_, OnShowImeIfNeeded());
 }
 
+void MockInputMethod::SetSupportsOnScreenKeyboard(bool supports) {
+}
+
+bool MockInputMethod::SupportsOnScreenKeyboard() const {
+  return false;
+}
+
 void MockInputMethod::AddObserver(InputMethodObserver* observer) {
   observer_list_.AddObserver(observer);
 }