Rationalize the handling of the native lib, and the plugin to manage native resources, like this icu dat file, needed by icu in sqlite in the libandroid_native.so used by robolectic (in some configurations or robolectric tests).

Test: atest NexusLauncherRoboTests; atest NativeGraphicsRoboTest
Bug: 393164499
Flag: TEST_ONLY
Change-Id: I5a5a39389d4c508347db6a4e975aae0bf093e349

icu4c/source/stubdata/Android.bp

diff --git a/icu4c/source/stubdata/Android.bp b/icu4c/source/stubdata/Android.bp
index 6e78c00..13a93db 100644
--- a/icu4c/source/stubdata/Android.bp
+++ b/icu4c/source/stubdata/Android.bp
@@ -48,3 +48,18 @@
         dir: "layoutlib_native/icu",
     },
 }
+
+java_library {
+    name: "icu-data_host_robolectric",
+    host_supported: true,
+    device_supported: false,
+    java_resources: [
+        dat_file,
+    ],
+    // Robolectric expects the .dat file to be in a specific location.
+    // This jarjar rule renames the .dat file to the expected name.
+    jarjar_rules: "robo-jarjar-rules.txt",
+    visibility: [
+        "//external/robolectric",
+    ],
+}

icu4c/source/stubdata/robo-jarjar-rules.txt

diff --git a/icu4c/source/stubdata/robo-jarjar-rules.txt b/icu4c/source/stubdata/robo-jarjar-rules.txt
new file mode 100644
index 0000000..19c3d00
--- /dev/null
+++ b/icu4c/source/stubdata/robo-jarjar-rules.txt
@@ -0,0 +1 @@
+rule * icu.@1