Pure Refactor: move filtering logic into AdvertisementFilter class

- this decouples filtering logic from advertisement decoding logic
   in preparation for introducing a Rust backed impl of
   AdvertisementDecoder
 - this change is only a refactor and does not change functionality
   in any way

PiperOrigin-RevId: 618978564

presence/implementation/advertisement_decoder.h

@@ -57,19 +57,12 @@ class AdvertisementDecoder {
     AddBannedDataTypes();
   }
 
-  static std::vector<CredentialSelector> GetCredentialSelectors(
-      const ScanRequest& scan_request);
-
   // Returns a list of Data Elements decoded from the advertisement.
   // Returns an error if the advertisement is misformatted or if it couldn't be
   // decrypted.
   absl::StatusOr<Advertisement> DecodeAdvertisement(
       absl::string_view advertisement);
 
-  // Returns true if the decoded advertisement in `data_elements` matches the
-  // filters in `scan_request`.
-  bool MatchesScanFilter(const std::vector<DataElement>& data_elements);
-
  private:
   // Decrypts data elements stored inside encrypted `elem` and appends them to
   // `decoded_advertisement_`.
@@ -81,10 +74,6 @@ class AdvertisementDecoder {
       const std::vector<internal::SharedCredential>& credentials,
       absl::string_view salt, absl::string_view data_elements);
   void AddBannedDataTypes();
-  bool MatchesScanFilter(const std::vector<DataElement>& data_elements,
-                         const PresenceScanFilter& filter);
-  bool MatchesScanFilter(const std::vector<DataElement>& data_elements,
-                         const LegacyPresenceScanFilter& filter);
 
   ScanRequest scan_request_;
   absl::flat_hash_map<IdentityType, std::vector<internal::SharedCredential>>*