CSS Motion Path: delete implementation of motion-offset property

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"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/page/Page.h"
 #include "core/workers/WorkerOrWorkletGlobalScope.h"
 
 namespace {
 
 enum Milestone {
-  M58,
   M59,
   M60,
   M61,
   M62,
 };
 
 const char* milestoneString(Milestone milestone) {
   // These are the Estimated Stable Dates:
   // https://www.chromium.org/developers/calendar
 
   switch (milestone) {
-    case M58:
-      return "M58, around April 2017";
     case M59:
       return "M59, around June 2017";
     case M60:
       return "M60, around August 2017";
     case M61:
       return "M61, around September 2017";
     case M62:
       return "M62, around October 2017";
   }
 
@@ skipping 68 matching lines @@
   String message = DeprecationMessage(unresolved_property);
   if (!message.IsEmpty()) {
     page->GetDeprecation().Suppress(unresolved_property);
     ConsoleMessage* console_message = ConsoleMessage::Create(
         kDeprecationMessageSource, kWarningMessageLevel, message);
     frame->Console().AddMessage(console_message);
   }
 }
 
 String Deprecation::DeprecationMessage(CSSPropertyID unresolved_property) {
-  switch (unresolved_property) {
-    case CSSPropertyAliasMotionOffset:
-      return replacedWillBeRemoved("motion-offset", "offset-distance", M58,
-                                   "6390764217040896");
-    default:
-      return g_empty_string;
-  }
+  // TODO: Add a switch here when there are properties that we intend to
+  // deprecate.
+  // Returning an empty string for now.
+  return g_empty_string;
 }
 
 void Deprecation::CountDeprecation(const LocalFrame* frame,
                                    UseCounter::Feature feature) {
   if (!frame)
     return;
   Page* page = frame->GetPage();
   if (!page || page->GetDeprecation().mute_count_)
     return;
 
@@ skipping 283 matching lines @@
       return willBeRemoved("SVGPathElement.getPathSegAtLength", M62,
                            "5638783282184192");
 
     // Features that aren't deprecated don't have a deprecation message.
     default:
       return String();
   }
 }
 
 }  // namespace blink