Remove TODO <video preload> case-sensitivity (invalid spec bug)

Source/core/html/HTMLMediaElement.cpp

Index: Source/core/html/HTMLMediaElement.cpp
diff --git a/Source/core/html/HTMLMediaElement.cpp b/Source/core/html/HTMLMediaElement.cpp
index 5cca5fb0dc10f9703e4b77ad1b092c9dca7725c5..ef4a05ad0d62be0329b56a7988629cce0241fb62 100644
--- a/Source/core/html/HTMLMediaElement.cpp
+++ b/Source/core/html/HTMLMediaElement.cpp
@@ -1906,8 +1906,6 @@ void HTMLMediaElement::setPreload(const AtomicString& preload)
 
 WebMediaPlayer::Preload HTMLMediaElement::preloadType() const
 {
-    // TODO(philipj): The spec requires case-sensitive string matching:
-    // https://www.w3.org/Bugs/Public/show_bug.cgi?id=28951
     const AtomicString& preload = fastGetAttribute(preloadAttr);
     if (equalIgnoringCase(preload, "none")) {
         UseCounter::count(document(), UseCounter::HTMLMediaElementPreloadNone);