Revert of Remove applyAuthorStyles flag from ShadowRoot.

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 655 matching lines @@
 
     case HTMLSourceElementMedia:
         return "'HTMLSourceElement.media' is deprecated. This attribute doesn't do anything.";
 
     case PrefixedGetImageDataHD:
         return "'CanvasRenderingContext2D.webkitGetImageDataHD' is deprecated. Please use getImageData instead.";
 
     case PrefixedPutImageDataHD:
         return "'CanvasRenderingContext2D.webkitPutImageDataHD' is deprecated. Please use putImageData instead.";
 
+    case ShadowRootApplyAuthorStyles:
+        return "'ShadowRoot.applyAuthorStyles' is deprecated.";
+
     case PrefixedSpeechAttribute:
         return "The 'x-webkit-speech' input field attribute is deprecated. Please use the JavaScript API instead.";
 
     case PrefixedGamepad:
         return "'navigator.webkitGetGamepads' is deprecated. Please use 'navigator.getGamepads' instead.";
 
     case PrefixedRequestAnimationFrame:
         return "'webkitRequestAnimationFrame' is vendor-specific. Please use the standard 'requestAnimationFrame' instead.";
 
     case PrefixedCancelAnimationFrame:
         return "'webkitCancelAnimationFrame' is vendor-specific. Please use the standard 'cancelAnimationFrame' instead.";
 
     case PrefixedCancelRequestAnimationFrame:
         return "'webkitCancelRequestAnimationFrame' is vendor-specific. Please use the standard 'cancelAnimationFrame' instead.";
 
+    // 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);
     ASSERT(!isInternalProperty(feature));
@@ skipping 27 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 WebCore