Support combination of [OriginTrialEnabled] and [SecureContext]

third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl

Index: third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl
diff --git a/third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl b/third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl
index e9a852278203a5cfc2499e315e15ad201a45f1c5..746d02b4a70ec4e15e68233aad59001097151392 100644
--- a/third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl
+++ b/third_party/WebKit/Source/modules/webusb/NavigatorUSB.idl
@@ -4,9 +4,6 @@
 
 // https://wicg.github.io/webusb/#enumeration
 
-// The [SecureContext] and [OriginTrialEnabled] extended attributes don't mix.
-// Once this is out of origin trial and the secure context logic is removed from
-// ConditionalFeaturesForModules.cpp add [SecureContext] here.
 partial interface Navigator {
-    [OriginTrialEnabled=WebUSB] readonly attribute USB usb;
+    [SecureContext, OriginTrialEnabled=WebUSB] readonly attribute USB usb;
 };