Add DialogShowParams to <dialog>'s show() and showModal()

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 9edc5883e4ea38e02f6a61618fe0434fdac93113..879a68b005adda37887ff93d310843625317bc39 100644
--- a/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLDialogElement.cpp
@@ -32,6 +32,7 @@
 #include "core/events/Event.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/UseCounter.h"
+#include "core/html/DialogShowParams.h"
 #include "core/html/HTMLFormControlElement.h"
 #include "core/style/ComputedStyle.h"
 
@@ -138,19 +139,22 @@ void HTMLDialogElement::scheduleCloseEvent() {
   document().enqueueAnimationFrameEvent(event);
 }
 
-void HTMLDialogElement::show() {
+void HTMLDialogElement::show(const DialogShowParams& showParams) {
   if (fastHasAttribute(openAttr))
     return;
   setBooleanAttribute(openAttr, true);
 
+  if (showParams.skipInitialFocus())
+    return;
+
   // The layout must be updated here because setFocusForDialog calls
   // Element::isFocusable, which requires an up-to-date layout.
   document().updateStyleAndLayoutIgnorePendingStylesheets();
-
   setFocusForDialog(this);
 }
 
-void HTMLDialogElement::showModal(ExceptionState& exceptionState) {
+void HTMLDialogElement::showModal(const DialogShowParams& showParams,
+                                  ExceptionState& exceptionState) {
   if (fastHasAttribute(openAttr)) {
     exceptionState.throwDOMException(InvalidStateError,
                                      "The element already has an 'open' "
@@ -173,6 +177,10 @@ void HTMLDialogElement::showModal(ExceptionState& exceptionState) {
   inertSubtreesChanged(document());
 
   forceLayoutForCentering();
+
+  if (showParams.skipInitialFocus())
+    return;
+
   setFocusForDialog(this);
 }