Added [SecureContext] to the subtle attribute

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/LocalFrame.h"
@@ skipping 368 matching lines @@
       return willBeRemoved(
           "-internal-media-controls-overlay-cast-button selector", M61,
           "5714245488476160");
 
     case UseCounter::kSelectionAddRangeIntersect:
       return "The behavior that Selection.addRange() merges existing Range and "
              "the specified Range was removed. See "
              "https://www.chromestatus.com/features/6680566019653632 for more "
              "details.";
 
-    case UseCounter::kSubtleCryptoOnlyStrictSecureContextCheckFailed:
-      return String::Format(
-          "Web Crypto API usage inside secure frames with non-secure ancestors "
-          "is deprecated. The API will no longer be exposed in these contexts "
-          "as of %s. See https://www.chromestatus.com/features/5030265697075200"
-          " for more details.",
-          milestoneString(M59));
-
     case UseCounter::kRtcpMuxPolicyNegotiate:
       return String::Format(
           "The rtcpMuxPolicy option is being considered for "
           "removal and may be removed no earlier than %s. If you depend on it, "
           "please see https://www.chromestatus.com/features/5654810086866944 "
           "for more details.",
           milestoneString(M62));
 
     case UseCounter::kV8IDBFactory_WebkitGetDatabaseNames_Method:
       return willBeRemoved("indexedDB.webkitGetDatabaseNames()", M60,
@@ skipping 28 matching lines @@
       return willBeRemoved("SVGPathElement.getPathSegAtLength", M62,
                            "5638783282184192");
 
     // Features that aren't deprecated don't have a deprecation message.
     default:
       return String();
   }
 }
 
 }  // namespace blink