Measure usage of the prefixed encrypted media APIs

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 601 matching lines @@
 }
 
 String UseCounter::deprecationMessage(Feature feature)
 {
     switch (feature) {
     // Content Security Policy
     case PrefixedContentSecurityPolicy:
     case PrefixedContentSecurityPolicyReportOnly:
         return "The 'X-WebKit-CSP' headers are no longer supported. Please consider using the canonical 'Content-Security-Policy' header instead.";
 
-    // HTMLMediaElement
-    case PrefixedMediaGenerateKeyRequest:
-        return "'HTMLMediaElement.webkitGenerateKeyRequest()' is deprecated. Please use 'MediaKeys.createSession()' instead.";
-
     // Quota
     case StorageInfo:
         return "'window.webkitStorageInfo' is deprecated. Please use 'navigator.webkitTemporaryStorage' or 'navigator.webkitPersistentStorage' instead.";
 
     // Performance
     case PrefixedPerformanceTimeline:
         return "'window.performance.webkitGet*' methods have been deprecated. Please use the unprefixed 'performance.get*' methods instead.";
     case PrefixedUserTiming:
         return "'window.performance.webkit*' methods have been deprecated. Please use the unprefixed 'window.performance.*' methods instead.";
 
@@ skipping 92 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