[Nearby] Add copy constructor to NearbyShareDecryptedPublicCertificate

Change-Id: I2e4fda0aae8c4f644c6e0ef79c410554611199cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2347976
Auto-Submit: Josh Nohle <nohle@chromium.org>
Commit-Queue: James Vecore <vecore@google.com>
Reviewed-by: James Vecore <vecore@google.com>
Cr-Commit-Position: refs/heads/master@{#796713}

chrome/browser/nearby_sharing/certificates/nearby_share_decrypted_public_certificate.cc

@@ -180,6 +180,12 @@ NearbyShareDecryptedPublicCertificate::NearbyShareDecryptedPublicCertificate(
       id_(std::move(id)),
       unencrypted_metadata_(std::move(unencrypted_metadata)) {}
 
+NearbyShareDecryptedPublicCertificate::NearbyShareDecryptedPublicCertificate(
+    const NearbyShareDecryptedPublicCertificate&) = default;
+NearbyShareDecryptedPublicCertificate&
+NearbyShareDecryptedPublicCertificate::operator=(
+    const NearbyShareDecryptedPublicCertificate&) = default;
+
 NearbyShareDecryptedPublicCertificate::NearbyShareDecryptedPublicCertificate(
     NearbyShareDecryptedPublicCertificate&&) = default;
 NearbyShareDecryptedPublicCertificate&

chrome/browser/nearby_sharing/certificates/nearby_share_decrypted_public_certificate.h

@@ -31,6 +31,10 @@ class NearbyShareDecryptedPublicCertificate {
       const nearbyshare::proto::PublicCertificate& public_certificate,
       const NearbyShareEncryptedMetadataKey& encrypted_metadata_key);
 
+  NearbyShareDecryptedPublicCertificate(
+      const NearbyShareDecryptedPublicCertificate&);
+  NearbyShareDecryptedPublicCertificate& operator=(
+      const NearbyShareDecryptedPublicCertificate&);
   NearbyShareDecryptedPublicCertificate(
       NearbyShareDecryptedPublicCertificate&&);
   NearbyShareDecryptedPublicCertificate& operator=(