Limit display of the virtual keyboard to state changes triggered from a user gesture.

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 c5fa4e26f0352fa128880f2bb9380d6d3d2e959e..6621616fc38c68d5f9c6f4a19e6584a28520a252 100644
--- a/ui/base/ime/mock_input_method.cc
+++ b/ui/base/ime/mock_input_method.cc
@@ -128,6 +128,9 @@ bool MockInputMethod::IsCandidatePopupOpen() const {
   return false;
 }
 
+void MockInputMethod::ShowVirtualKeyboard() {
+}
+
 void MockInputMethod::AddObserver(InputMethodObserver* observer) {
   observer_list_.AddObserver(observer);
 }