Add delay to didAssociateFormControlsTimer so it doesn't fire too frequently

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

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 0e123a4bd445c26378da5f43e2689b6c21d2a9c0..df00b2e66e628c19783abc41643d0362b70657a8 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -5711,8 +5711,9 @@ void Document::didAssociateFormControl(Element* element)
     if (!frame() || !frame()->page())
         return;
     m_associatedFormControls.add(element);
+    // We add a slight delay because this could be called rapidly.
     if (!m_didAssociateFormControlsTimer.isActive())
-        m_didAssociateFormControlsTimer.startOneShot(0, BLINK_FROM_HERE);
+        m_didAssociateFormControlsTimer.startOneShot(0.3, BLINK_FROM_HERE);
 }
 
 void Document::removeFormAssociation(Element* element)