Work around b/70221552

If one sets a sufficiently long OUT_DIR to build into the
//frameworks/base:framework-javastream-protos generate target will
fail due to trying to run a too-long command. This works around that
problem by making the command being run much smaller.

Test: Build
Bug: 70221552
Change-Id: I0134ccfc83469826d3ea8679e1c52b9b52c6d2e0
diff --git a/Android.bp b/Android.bp
index 75fd2e6..2e3073f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -735,22 +735,24 @@
     name: "framework-javastream-protos",
     depfile: true,
 
+    tool_files: [ "tools/genprotos.sh", ],
     tools: [
         "aprotoc",
         "protoc-gen-javastream",
         "soong_zip",
     ],
 
-    cmd: "mkdir -p $(genDir)/$(in) " +
-        "&& $(location aprotoc) " +
-        "  --plugin=$(location protoc-gen-javastream) " +
-        "  --dependency_out=$(depfile) " +
-        "  --javastream_out=$(genDir)/$(in) " +
-        "  -Iexternal/protobuf/src " +
-        "  -I . " +
-        "  $(in) " +
-        "&& $(location soong_zip) -jar -o $(out) -C $(genDir)/$(in) -D $(genDir)/$(in)",
-
+    // TODO This should not be needed. If you set a custom OUT_DIR or OUT_DIR_COMMON_BASE you can
+    // end up with a command that is extremely long, potentially going passed MAX_ARG_STRLEN due to
+    // the way sbox rewrites the command. See b/70221552.
+    cmd: "$(location tools/genprotos.sh) " +
+              " $(location aprotoc) " +
+              " $(location protoc-gen-javastream) " +
+              " $(location soong_zip) " +
+              " $(genDir) " +
+              " $(depfile) " +
+              " $(in) " +
+              " $(out)",
     srcs: [
         "core/proto/**/*.proto",
         "libs/incident/**/*.proto",