Remove UserGestureUtilizedCallback, it's unused outside of tests

third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp

Index: third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp
diff --git a/third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp b/third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp
index e4006ff42d1775230f17f5406892a2e0691e1c51..3d6d9944eb664a49eab8a6f58a4344388d263230 100644
--- a/third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp
+++ b/third_party/WebKit/Source/modules/webshare/NavigatorShare.cpp
@@ -109,7 +109,7 @@ ScriptPromise NavigatorShare::share(ScriptState* script_state,
     DOMException* error = DOMException::Create(kSecurityError, error_message);
     return ScriptPromise::RejectWithDOMException(script_state, error);
   }
-  if (!UserGestureIndicator::UtilizeUserGesture()) {
+  if (!UserGestureIndicator::ProcessingUserGesture()) {
     DOMException* error = DOMException::Create(
         kSecurityError,
         "Must be handling a user gesture to perform a share request.");