Remove the allowfullscreen exemption for the video-specific fullscreen API (reland)

Source/core/dom/Fullscreen.cpp

Index: Source/core/dom/Fullscreen.cpp
diff --git a/Source/core/dom/Fullscreen.cpp b/Source/core/dom/Fullscreen.cpp
index 8bab9eddd3ffbbc4ad12edb08f92692f754b6cb0..19116b0f0f096bcdbd0c8ee6b0cb7f4e7a20c032 100644
--- a/Source/core/dom/Fullscreen.cpp
+++ b/Source/core/dom/Fullscreen.cpp
@@ -76,12 +76,8 @@ static bool fullscreenElementReady(const Element& element, Fullscreen::RequestTy
         return false;
 
     // |element|'s node document's fullscreen enabled flag is set.
-    if (!fullscreenIsAllowedForAllOwners(element.document())) {
-        if (requestType == Fullscreen::PrefixedVideoRequest)
-            UseCounter::countDeprecation(element.document(), UseCounter::VideoFullscreenAllowedExemption);
-        else
-            return false;
-    }
+    if (!fullscreenIsAllowedForAllOwners(element.document()))
+        return false;
 
     // |element|'s node document's fullscreen element stack is either empty or its top element is an
     // inclusive ancestor of |element|.