CSS Motion Path: Deprecate motion-* and offset-rotation

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 36 matching lines @@
 
 String willBeRemoved(const char* feature,
                      Milestone milestone,
                      const char* details) {
   return String::format(
       "%s is deprecated and will be removed in %s. See "
       "https://www.chromestatus.com/features/%s for more details.",
       feature, milestoneString(milestone), details);
 }
 
-#if 0
-// TODO(jsbell): Currently unused, but likely to be needed in the future.
 String replacedWillBeRemoved(const char* feature,
                              const char* replacement,
                              Milestone milestone,
                              const char* details) {
   return String::format(
       "%s is deprecated and will be removed in %s. Please use %s instead. See "
       "https://www.chromestatus.com/features/%s for more details.",
       feature, milestoneString(milestone), replacement, details);
 }
-#endif
 
 }  // anonymous namespace
 
 namespace blink {
 
 Deprecation::Deprecation() : m_muteCount(0) {
   m_cssPropertyDeprecationBits.ensureSize(lastUnresolvedCSSProperty + 1);
 }
 
 Deprecation::~Deprecation() {}
@@ skipping 30 matching lines @@
   String message = deprecationMessage(unresolvedProperty);
   if (!message.isEmpty()) {
     host->deprecation().suppress(unresolvedProperty);
     ConsoleMessage* consoleMessage = ConsoleMessage::create(
         DeprecationMessageSource, WarningMessageLevel, message);
     frame->console().addMessage(consoleMessage);
   }
 }
 
 String Deprecation::deprecationMessage(CSSPropertyID unresolvedProperty) {
-  // TODO: Add a switch here when there are properties that we intend to
-  // deprecate.
-  // Returning an empty string for now.
-  return emptyString();
+  switch (unresolvedProperty) {
+    case CSSPropertyAliasMotionOffset:
+      return replacedWillBeRemoved("motion-offset", "offset-distance", M58,
+                                   "6390764217040896");
+    case CSSPropertyAliasMotionRotation:
+      return replacedWillBeRemoved("motion-rotation", "offset-rotate", M58,
+                                   "6390764217040896");
+    case CSSPropertyAliasMotionPath:
+      return replacedWillBeRemoved("motion-path", "offset-path", M58,
+                                   "6390764217040896");
+    case CSSPropertyMotion:
+      return replacedWillBeRemoved("motion", "offset", M58, "6390764217040896");
+    case CSSPropertyOffsetRotation:
+      return replacedWillBeRemoved("offset-rotation", "offset-rotate", M58,
+                                   "6390764217040896");
+
+    default:
+      return emptyString();
+  }
 }
 
 void Deprecation::countDeprecation(const LocalFrame* frame,
                                    UseCounter::Feature feature) {
   if (!frame)
     return;
   FrameHost* host = frame->host();
   if (!host || host->deprecation().m_muteCount)
     return;
 
@@ skipping 269 matching lines @@
       return willBeRemoved("HTMLObjectElement legacy caller", M58,
                            "5715026367217664");
 
     // Features that aren't deprecated don't have a deprecation message.
     default:
       return String();
   }
 }
 
 }  // namespace blink