JPEG/R refactor: rename "recovery map" to "gain map"

Bug: b/264715926
Test: build, jpegr_test, gainmapmath_test
Change-Id: I9ff07ed4201f0d7ee664209fc0450808f2ec143d
diff --git a/libs/jpegrecoverymap/tests/Android.bp b/libs/jpegrecoverymap/tests/Android.bp
index d5da7fb..59b1237 100644
--- a/libs/jpegrecoverymap/tests/Android.bp
+++ b/libs/jpegrecoverymap/tests/Android.bp
@@ -26,7 +26,7 @@
     test_suites: ["device-tests"],
     srcs: [
         "jpegr_test.cpp",
-        "recoverymapmath_test.cpp",
+        "gainmapmath_test.cpp",
     ],
     shared_libs: [
         "libimage_io",