Add removal date to ::shadow and /deep/

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 346 matching lines @@
           "https://goo.gl/rStTGz for more details.",
           milestoneString(M60));
 
     case UseCounter::ElementCreateShadowRootMultiple:
       return "Calling Element.createShadowRoot() for an element which already "
              "hosts a shadow root is deprecated. See "
              "https://www.chromestatus.com/features/4668884095336448 for more "
              "details.";
 
     case UseCounter::CSSDeepCombinator:
-      return "/deep/ combinator is deprecated. See "
-             "https://www.chromestatus.com/features/6750456638341120 for more "
-             "details.";
+      return String::format(
+          "/deep/ combinator is deprecated and will be a no-op in %s. See "
+          "https://www.chromestatus.com/features/4964279606312960 for more "
+          "details.",
+          milestoneString(M60));
 
     case UseCounter::CSSSelectorPseudoShadow:
-      return "::shadow pseudo-element is deprecated. See "
-             "https://www.chromestatus.com/features/6750456638341120 for more "
-             "details.";
+      return willBeRemoved("::shadow pseudo-element", M60, "6750456638341120");
 
     case UseCounter::VRDeprecatedFieldOfView:
       return replacedBy("VREyeParameters.fieldOfView",
                         "projection matrices provided by VRFrameData");
 
     case UseCounter::VRDeprecatedGetPose:
       return replacedBy("VRDisplay.getPose()", "VRDisplay.getFrameData()");
 
     case UseCounter::
         ServiceWorkerRespondToNavigationRequestWithRedirectedResponse:
@@ skipping 17 matching lines @@
       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::SubtleCryptoOnlyStrictSecureContextCheckFailed:
       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));
+          " for more details.",
+          milestoneString(M59));
 
     case UseCounter::RtcpMuxPolicyNegotiate:
       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(M60));
 
     case UseCounter::V8IDBFactory_WebkitGetDatabaseNames_Method:
       return willBeRemoved("indexedDB.webkitGetDatabaseNames()", M60,
                            "5725741740195840");
 
     case UseCounter::ChildSrcAllowedWorkerThatScriptSrcBlocked:
       return replacedWillBeRemoved("The 'child-src' directive",
                                    "the 'script-src' directive for Workers",
                                    M60, "5922594955984896");
 
     // Features that aren't deprecated don't have a deprecation message.
     default:
       return String();
   }
 }
 
 }  // namespace blink