DO NOT MERGE: Drop prebuilt files to android source tree.

The following files have been updated as part of this change:

current/Android.bp
current/snapshot-creation-build-number.txt
current/sdk_library/public/framework-sdkextensions-removed.txt
current/sdk_library/public/framework-sdkextensions-stubs.jar
current/sdk_library/public/framework-sdkextensions.srcjar
current/sdk_library/public/framework-sdkextensions.txt
current/sdk_library/public/framework-sdkextensions_annotations.zip
current/sdk_library/module-lib/framework-sdkextensions-removed.txt
current/sdk_library/module-lib/framework-sdkextensions-stubs.jar
current/sdk_library/module-lib/framework-sdkextensions.srcjar
current/sdk_library/module-lib/framework-sdkextensions.txt
current/sdk_library/module-lib/framework-sdkextensions_annotations.zip
current/sdk_library/system/framework-sdkextensions-removed.txt
current/sdk_library/system/framework-sdkextensions-stubs.jar
current/sdk_library/system/framework-sdkextensions.srcjar
current/sdk_library/system/framework-sdkextensions.txt
current/sdk_library/system/framework-sdkextensions_annotations.zip
current/licenses/build/soong/licenses/LICENSE
current/hiddenapi/annotation-flags.csv
current/hiddenapi/filtered-flags.csv
current/hiddenapi/filtered-stub-flags.csv
current/hiddenapi/index.csv
current/hiddenapi/metadata.csv
current/hiddenapi/signature-patterns.csv

Built here: ab/T1009377

This build IS suitable for public release.

The change is generated with prebuilt drop tool.

Test: presubmit
Bug: 324284464
Change-Id: Ic295b31d0b9db52694eb4bc42df408372ca891d8

.prebuilt_info/prebuilt_info_current_current_zip.asciipb

 drops {
   android_build_drop {
-    build_id: "10917791"
-    target: "mainline_modules_sdks-trunk-userdebug"
-    source_file: "mainline-sdks/for-latest-build/current/com.google.android.sdkext/sdk/sdkextensions-sdk-current.zip"
+    build_id: "T1009377"
+    target: "train_build"
+    source_file: "mainline-sdks/for-UpsideDownCake-build/current/com.google.android.sdkext/sdk/sdkextensions-sdk-current.zip"
   }
   dest_file: "current/current.zip"
   version: ""

current/snapshot-creation-build-number.txt

-10917791
\ No newline at end of file
+11207236
\ No newline at end of file