StubCallInterfaceDescriptor takes a context register.

src/arm64/lithium-arm64.h

Index: src/arm64/lithium-arm64.h
diff --git a/src/arm64/lithium-arm64.h b/src/arm64/lithium-arm64.h
index f7be2ed4967843feea51c88a0e210e1832ca6bf7..cecfc8a345c7d08bedd3451161ab508dca6f65a1 100644
--- a/src/arm64/lithium-arm64.h
+++ b/src/arm64/lithium-arm64.h
@@ -1523,8 +1523,8 @@ class LCallWithDescriptor V8_FINAL : public LTemplateResultInstruction<1> {
                       const ZoneList<LOperand*>& operands,
                       Zone* zone)
     : descriptor_(descriptor),
-      inputs_(descriptor->environment_length() + 1, zone) {
-    ASSERT(descriptor->environment_length() + 1 == operands.length());
+      inputs_(descriptor->GetEnvironmentLength() + 1, zone) {
+    ASSERT(descriptor->GetEnvironmentLength() + 1 == operands.length());
     inputs_.AddAll(operands, zone);
   }