Add UseCounter feature for requestMidiAccess with sysex:true

third_party/WebKit/Source/core/frame/UseCounter.h

Index: third_party/WebKit/Source/core/frame/UseCounter.h
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.h b/third_party/WebKit/Source/core/frame/UseCounter.h
index f2b942374728867838f515c1f564541dfc184ea2..6b5f2fd623e17cc42979d153fb5640092ac58509 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -1578,6 +1578,8 @@ class CORE_EXPORT UseCounter {
     // The above items are available in M59 branch.
 
     kViewportFixedPositionUnderFilter = 1961,
+    kRequestMIDIAccessWithSysExOption = 1962,
+    kRequestMIDIAccessIframeWithSysExOption = 1963,
 
     // Add new features immediately above this line. Don't change assigned
     // numbers of any item, and don't reuse removed slots.