Do not propagate strict updatability linting to libcore/

propogation of this flag is determined by the location of the Android.bp
where a library is defined.
libcore/ libraries that are transtive deps of updatable apexes will
- inherit strict_updatability_linting:true if defined in libcore root
- not inherit strict_updatability_linting:true if defined in libcore
  subdir

Note that the module can explicitly list `lint:{strict_updatability_linting: true}'
in their Android.bp file, in which case they will not be allowed to
baseline NewApi errors

Test: m lint-check
Test: TH
Bug: 208656169
Bug: 182349282

Change-Id: I4c373b2960a7af16301d7f06aab448f39b937ea9

apex/apex.go

@@ -1011,6 +1011,14 @@ func apexStrictUpdatibilityLintMutator(mctx android.TopDownMutatorContext) {
 	}
 	if apex, ok := mctx.Module().(*apexBundle); ok && apex.checkStrictUpdatabilityLinting() {
 		mctx.WalkDeps(func(child, parent android.Module) bool {
+			// b/208656169 Do not propagate strict updatability linting to libcore/
+			// These libs are available on the classpath during compilation
+			// These libs are transitive deps of the sdk. See java/sdk.go:decodeSdkDep
+			// Only skip libraries defined in libcore root, not subdirectories
+			if mctx.OtherModuleDir(child) == "libcore" {
+				// Do not traverse transitive deps of libcore/ libs
+				return false
+			}
 			if lintable, ok := child.(java.LintDepSetsIntf); ok {
 				lintable.SetStrictUpdatabilityLinting(true)
 			}