Rename getGain() to getVendorSpecificGain()

Bug: 315131060
Test: Tested with CTS
Merged-In: I9b0d592fc12912ae8da29472de148206e3eb6324
Change-Id: I9b0d592fc12912ae8da29472de148206e3eb6324
diff --git a/nfc/api/current.txt b/nfc/api/current.txt
index d300e94..54f1421 100644
--- a/nfc/api/current.txt
+++ b/nfc/api/current.txt
@@ -268,9 +268,9 @@
     ctor public PollingFrame(int, @Nullable byte[], int, int);
     method public int describeContents();
     method @NonNull public byte[] getData();
-    method public int getGain();
     method public int getTimestamp();
     method public int getType();
+    method public int getVendorSpecificGain();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.nfc.cardemulation.PollingFrame> CREATOR;
     field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final int POLLING_LOOP_TYPE_A = 65; // 0x41