Introduce FullscreenElementStack::RequestType

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index da33f26b5e37b125e42942e8c6ab43d2684a74a3..00640104fdb990dca72713e154c5e5a1d0a1ab36 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -2666,12 +2666,17 @@ void Element::setFloatingPointAttribute(const QualifiedName& attributeName, doub
 
 void Element::webkitRequestFullscreen()
 {
-    FullscreenElementStack::from(document()).requestFullScreenForElement(*this, ALLOW_KEYBOARD_INPUT, FullscreenElementStack::EnforceIFrameAllowFullScreenRequirement);
+    FullscreenElementStack::from(document()).requestFullScreenForElement(*this, FullscreenElementStack::PrefixedRequest);
 }
 
 void Element::webkitRequestFullScreen(unsigned short flags)
 {
-    FullscreenElementStack::from(document()).requestFullScreenForElement(*this, (flags | LEGACY_MOZILLA_REQUEST), FullscreenElementStack::EnforceIFrameAllowFullScreenRequirement);
+    FullscreenElementStack::RequestType requestType;
+    if (flags & ALLOW_KEYBOARD_INPUT)
+        requestType = FullscreenElementStack::PrefixedMozillaAllowKeyboardInputRequest;
+    else
+        requestType = FullscreenElementStack::PrefixedMozillaRequest;
+    FullscreenElementStack::from(document()).requestFullScreenForElement(*this, requestType);
 }
 
 void Element::setContainsFullScreenElement(bool flag)