Use a filegroup for the AndroidManifest.xml input

To allow the droidstubs module to be moved to a directory other than
the root, where it would otherwise not be able to access the manifest.

Bug: 271563074
Test: m
Change-Id: Ic437a4157a390d11397de1fe6744ae46a72d2508

Android.bp

@@ -506,7 +506,7 @@ metalava_framework_docs_args = "" +
     "--hide Todo " +
     "--hide Typo " +
     "--hide UnavailableSymbol " +
-    "--manifest $(location core/res/AndroidManifest.xml) "
+    "--manifest $(location :frameworks-base-core-AndroidManifest.xml) "
 
 packages_to_document = [
     "android",
@@ -543,7 +543,7 @@ stubs_defaults {
     sdk_version: "none",
     system_modules: "none",
     java_version: "1.8",
-    arg_files: ["core/res/AndroidManifest.xml"],
+    arg_files: [":frameworks-base-core-AndroidManifest.xml"],
     aidl: {
         local_include_dirs: [
             "media/aidl",

core/res/Android.bp

@@ -172,3 +172,12 @@ genrule {
         " > $(out)",
     tools: ["xmllint"],
 }
+
+filegroup {
+    name: "frameworks-base-core-AndroidManifest.xml",
+    srcs: ["AndroidManifest.xml"],
+    visibility: [
+        "//frameworks/base",
+        "//frameworks/base/api",
+    ],
+}