HTMLDialogElement#showModal() should ignore unfocusable elements with [autofocus]

third_party/WebKit/Source/core/html/HTMLDialogElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp b/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
index 00e598d1d7b89154f2e09c91cc696a495fcf4ee8..3131829d390a848d04077586548d4dbef3860bf5 100644
--- a/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
@@ -55,7 +55,7 @@ static void setFocusForDialog(HTMLDialogElement* dialog)
         Element* element = toElement(node);
         if (element->isFormControlElement()) {
             HTMLFormControlElement* control = toHTMLFormControlElement(node);
-            if (control->isAutofocusable()) {
+            if (control->isAutofocusable() && control->isFocusable()) {
                 control->focus();
                 return;
             }