Web MIDI: prepare to deprecate MIDIMessageEvent::receivedTime

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

Index: third_party/WebKit/Source/core/frame/Deprecation.cpp
diff --git a/third_party/WebKit/Source/core/frame/Deprecation.cpp b/third_party/WebKit/Source/core/frame/Deprecation.cpp
index 26f8c70d90a3ae592a9ff2ec364a84ae7264e33a..621f42eaf7f7bfc05df9287f9c9d2961aca81d83 100644
--- a/third_party/WebKit/Source/core/frame/Deprecation.cpp
+++ b/third_party/WebKit/Source/core/frame/Deprecation.cpp
@@ -32,6 +32,8 @@ const char* milestoneString(int milestone)
         return "M54, around October 2016";
     case 55:
         return "M55, around November 2016";
+    case 56:
+        return "M56, around January 2017";
     }
 
     ASSERT_NOT_REACHED();
@@ -386,6 +388,9 @@ String Deprecation::deprecationMessage(UseCounter::Feature feature)
     case UseCounter::TouchEndDuringScrollUserGestureUtilized:
         return willBeRemoved("Performing operations that require explicit user interaction on touchend events that occur as part of a scroll", 54, "5649871251963904");
 
+    case UseCounter::MIDIMessageEventReceivedTime:
+        return willBeRemoved("MIDIMessageEvent.receivedTime", 56, "5665772797952000");
+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();