Remove old permission delegation prototype

content/common/frame_owner_properties.cc

Index: content/common/frame_owner_properties.cc
diff --git a/content/common/frame_owner_properties.cc b/content/common/frame_owner_properties.cc
index 8e0f7ead13abdc522b6321c170df42aec73656b3..a29dfc2cf619e50bce900aa0b1e84328b5a65a10 100644
--- a/content/common/frame_owner_properties.cc
+++ b/content/common/frame_owner_properties.cc
@@ -25,8 +25,6 @@ bool FrameOwnerProperties::operator==(const FrameOwnerProperties& other) const {
          allow_fullscreen == other.allow_fullscreen &&
          allow_payment_request == other.allow_payment_request &&
          required_csp == other.required_csp &&
-         std::equal(delegated_permissions.begin(), delegated_permissions.end(),
-                    other.delegated_permissions.begin()) &&
          std::equal(allowed_features.begin(), allowed_features.end(),
                     other.allowed_features.begin());
 }