Add use counters for navigator.requestMediaKeySystemAccess

third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp

Index: third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp b/third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp
index 9b2f5e950b9b4e34a8d0d7d2185abc6cad37e134..787837269ebf0ded1debe9f4993fde62231fb90c 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp
+++ b/third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp
@@ -327,6 +327,10 @@ ScriptPromise NavigatorRequestMediaKeySystemAccess::requestMediaKeySystemAccess(
             "The context provided is not associated with a page."));
   }
 
+  UseCounter::Count(*document, WebFeature::kEncryptedMediaSecureOrigin);
+  UseCounter::CountCrossOriginIframe(
+      *document, WebFeature::kEncryptedMediaCrossOriginIframe);
+
   // 4. Let origin be the origin of document.
   //    (Passed with the execution context.)