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 0237c178a90d10d43bb4150ec865e83db8984ccb..af301fb4901b9ce789f833b380538661d912c71a 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -5723,8 +5723,9 @@ 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)