EME: Update MediaKeySystemConfiguration defaults; require non-empty capabilities

third_party/WebKit/Source/core/frame/Deprecation.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/frame/Deprecation.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/FrameHost.h"
@@ skipping 328 matching lines @@
 
     case UseCounter::WebAnimationHyphenatedProperty:
         return "Hyphenated property names in Web Animations keyframes are invalid and therefore ignored. Please use camelCase instead.";
 
     case UseCounter::HTMLKeygenElement:
         return willBeRemoved("The <keygen> element", 56, "5716060992962560");
 
     case UseCounter::EncryptedMediaAllSelectedContentTypesMissingCodecs:
         return String::format("EME requires that contentType strings accepted by requestMediaKeySystemAccess() include codecs. Non-standard support for contentType strings without codecs will be removed in %s. Please specify the desired codec(s) as part of the contentType.", milestoneString(56));
 
+    case UseCounter::EncryptedMediaCapabilityNotProvided:
+        return String::format("EME requires that one of 'audioCapabilities' and 'videoCapabilities' must be non-empty. Non-standard support for this will be removed in %s. Please specify at least one valid capability for 'audioCapabilities' or 'videoCapabilities'.", milestoneString(56));

[foolip, 2016/09/23 08:18:39]

This needs an Intent to Deprecate and Remove on blink-dev. Since there's no use
counter data yet, some reason to think usage is low will be needed, to not risk
committing to removal and then having to delay/revert. If this isn't in a hurry,
then adding the use counter first would be less effort probably.

[jrummell, 2016/09/29 20:40:01]

Removed message for now until we get some data.

+
     case UseCounter::UntrustedEventDefaultHandled:
         return String::format("A DOM event generated from JavaScript has triggered a default action inside the browser. This behavior is non-standard and will be removed in %s. See https://www.chromestatus.com/features/5718803933560832 for more details.", milestoneString(53));
 
     case UseCounter::TouchStartUserGestureUtilized:
         return willBeRemoved("Performing operations that require explicit user interaction on touchstart events", 55, "5649871251963904");
 
     case UseCounter::TouchMoveUserGestureUtilized:
         return willBeRemoved("Performing operations that require explicit user interaction on touchmove events", 55, "5649871251963904");
 
     case UseCounter::TouchEndDuringScrollUserGestureUtilized:
@@ skipping 17 matching lines @@
     case UseCounter::WebAudioAutoplayCrossOriginIframe:
         return willBeRemoved("Web Audio autoplay (without user gesture) from cross-origin iframes", 55, "6406908126691328");
 
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();
     }
 }
 
 } // namespace blink