Add missing "override" annotations

Test: Build with CMake. See aosp/2629369.
Bug: 285204695
Change-Id: I5a0396d1fba458e11f42266e806634aaa1e9206d
diff --git a/libs/binder/RpcTransportRaw.cpp b/libs/binder/RpcTransportRaw.cpp
index f3575cc..ddbcb57 100644
--- a/libs/binder/RpcTransportRaw.cpp
+++ b/libs/binder/RpcTransportRaw.cpp
@@ -79,7 +79,7 @@
                                         altPoll);
     }
 
-    virtual bool isWaiting() { return mSocket.isInPollingState(); }
+    bool isWaiting() override { return mSocket.isInPollingState(); }
 
 private:
     android::RpcTransportFd mSocket;
@@ -88,7 +88,8 @@
 // RpcTransportCtx with TLS disabled.
 class RpcTransportCtxRaw : public RpcTransportCtx {
 public:
-    std::unique_ptr<RpcTransport> newTransport(android::RpcTransportFd socket, FdTrigger*) const {
+    std::unique_ptr<RpcTransport> newTransport(android::RpcTransportFd socket,
+                                               FdTrigger*) const override {
         return std::make_unique<RpcTransportRaw>(std::move(socket));
     }
     std::vector<uint8_t> getCertificate(RpcCertificateFormat) const override { return {}; }