Update of change event for input type number

Source/core/html/shadow/SpinButtonElement.cpp

Index: Source/core/html/shadow/SpinButtonElement.cpp
diff --git a/Source/core/html/shadow/SpinButtonElement.cpp b/Source/core/html/shadow/SpinButtonElement.cpp
index e0e30ae17a3cb02deea90ef60495bdf139a18277..881e922c8904635600e84ba3b2ab3fca7938d0ae 100644
--- a/Source/core/html/shadow/SpinButtonElement.cpp
+++ b/Source/core/html/shadow/SpinButtonElement.cpp
@@ -31,6 +31,7 @@
 #include "core/events/MouseEvent.h"
 #include "core/events/ThreadLocalEventNames.h"
 #include "core/events/WheelEvent.h"
+#include "core/html/HTMLInputElement.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/page/Chrome.h"
 #include "core/page/EventHandler.h"
@@ -111,9 +112,11 @@ void SpinButtonElement::defaultEventHandler(Event* event)
             }
             event->setDefaultHandled();
         }
-    } else if (mouseEvent->type() == EventTypeNames::mouseup && mouseEvent->button() == LeftButton)
+    } else if (mouseEvent->type() == EventTypeNames::mouseup && mouseEvent->button() == LeftButton) {
         stopRepeatingTimer();
-    else if (event->type() == EventTypeNames::mousemove) {
+        HTMLInputElement* input = toHTMLInputElement(shadowHost());
+        input->dispatchFormControlChangeEvent();

[tkent, 2014/01/15 00:19:44]

We need to call it in SpinButtonElement::releaseCapture because we have to
dispatch 'change' event when the element gets disabled.
BTW, probably the stopRepeatingTimer() here should be releaseCapture().

+    } else if (event->type() == EventTypeNames::mousemove) {
         if (box->pixelSnappedBorderBoxRect().contains(local)) {
             if (!m_capturing) {
                 if (Frame* frame = document().frame()) {