Send mouse events for disabled form controls.

third_party/WebKit/Source/core/dom/Node.cpp

Index: third_party/WebKit/Source/core/dom/Node.cpp
diff --git a/third_party/WebKit/Source/core/dom/Node.cpp b/third_party/WebKit/Source/core/dom/Node.cpp
index 8d534cad86a1cda348f842cd000b2ef448cb470b..d70c2af2f4ebba72d4c0640b9872514d14655194 100644
--- a/third_party/WebKit/Source/core/dom/Node.cpp
+++ b/third_party/WebKit/Source/core/dom/Node.cpp
@@ -2099,7 +2099,8 @@ void Node::HandleLocalEvents(Event& event) {
   if (!HasEventTargetData())
     return;
 
-  if (IsDisabledFormControl(this) && event.IsMouseEvent()) {
+  if (IsDisabledFormControl(this) && event.IsMouseEvent() &&
+      !RuntimeEnabledFeatures::sendMouseEventsDisabledFormControlsEnabled()) {
     UseCounter::Count(GetDocument(),
                       UseCounter::kDispatchMouseEventOnDisabledFormControl);
     return;