Add a requestFullscreen variant with a default (prefixed) type

third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp b/third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp
index 7cff1d54dd6f473c7644a9cd2d31287ad251c98c..562ce9f5cfdb0822a297f14d4eadaa4f0c3ca007 100644
--- a/third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp
@@ -524,9 +524,9 @@ void WebRemoteFrameImpl::willEnterFullscreen() {
   // TODO(alexmos): currently, this assumes prefixed requests, but in the
   // future, this should plumb in information about which request type
   // (prefixed or unprefixed) to use for firing fullscreen events.
-  Fullscreen::from(ownerElement->document())
-      .requestFullscreen(*ownerElement, Fullscreen::PrefixedRequest,
-                         true /* forCrossProcessAncestor */);
+  Fullscreen::requestFullscreen(*ownerElement,
+                                Fullscreen::RequestType::Prefixed,
+                                true /* forCrossProcessAncestor */);
 }
 
 WebRemoteFrameImpl::WebRemoteFrameImpl(WebTreeScopeType scope,