ended attribute has been deprecated. Adding usecounter to gather current usage statistics and let u…

Source/core/frame/UseCounter.cpp

 
 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 770 matching lines @@
 
     case HTMLTableElementVspace:
         return "The 'vspace' attribute on table is deprecated. Please use CSS instead.";
 
     case HTMLTableElementHspace:
         return "The 'hspace' attribute on table is deprecated. Please use CSS instead.";
 
     case PictureSourceSrc:
         return "<source src> with a <picture> parent is invalid and therefore ignored. Please use <source srcset> instead.";
 
+    case MediaStreamEnded:
+        return "The 'ended' attribute is deprecated and may be removed. Please do not use it.";

[Henrik Grunell, 2014/08/27 05:57:30]

I think the deprecation marking and message can be added when we add the
active/inactive attributes. And then have the message say that the meaning of
ended has changed and that active/inactive should be used instead.

In this CL, just add the counter without marking it as deprecated, so that we
get a view of the usage of it.

[Vinod Keshav, 2014/08/27 06:37:11]

Done.

+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();
     }
 }
 
 void UseCounter::count(CSSParserContext context, CSSPropertyID feature)
 {
     ASSERT(feature >= firstCSSProperty);
     ASSERT(feature <= lastCSSProperty);
@@ skipping 28 matching lines @@
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
     // FIXME: We may want to handle stylesheets that have multiple owners
     //        http://crbug.com/242125
     if (sheetContents && sheetContents->hasSingleOwnerNode())
         return getFrom(sheetContents->singleOwnerDocument());
     return 0;
 }
 
 } // namespace blink