cc mixed build support to allowlist M13 libraries

Propagate api_domain from top-level config_node(s) in mixed builds.
This ensures that cc_libraries are built in the correct config setting
in mixed builds

Test: m com.android.media.swcodec
Test: built and booted google variant of com.android.media.swcodec
Test: m ccodec_unit_test

Change-Id: I14e3c8e8358b5e90e71697584f9b0eceb018bfa9

cc/cc.go

@@ -1974,6 +1974,7 @@ func GetApexConfigKey(ctx android.BaseModuleContext) *android.ApexConfigKey {
 		apexKey := android.ApexConfigKey{
 			WithinApex:     true,
 			ApexSdkVersion: findApexSdkVersion(ctx, apexInfo).String(),
+			ApiDomain:      findApiDomain(apexInfo),
 		}
 		return &apexKey
 	}
@@ -1981,6 +1982,30 @@ func GetApexConfigKey(ctx android.BaseModuleContext) *android.ApexConfigKey {
 	return nil
 }
 
+// Returns the api domain of a module for an apexInfo group
+// Input:
+// ai.InApexModules: [com.android.foo, test_com.android.foo, com.google.android.foo]
+// Return:
+// com.android.foo
+
+// If a module is included in multiple api domains (collated by min_sdk_version), it will return
+// the first match. The other matches have the same build actions since they share a min_sdk_version, so returning
+// the first match is fine.
+func findApiDomain(ai android.ApexInfo) string {
+	// Remove any test apexes
+	matches, _ := android.FilterList(ai.InApexModules, ai.TestApexes)
+	// Remove any google apexes. Rely on naming convention.
+	pred := func(s string) bool { return !strings.HasPrefix(s, "com.google") }
+	matches = android.FilterListPred(matches, pred)
+	if len(matches) > 0 {
+		// Return the first match
+		return android.SortedUniqueStrings(matches)[0]
+	} else {
+		// No apex in the tree has a dependency on this module
+		return ""
+	}
+}
+
 func (c *Module) ProcessBazelQueryResponse(ctx android.ModuleContext) {
 	bazelModuleLabel := c.getBazelModuleLabel(ctx)
 	c.bazelHandler.ProcessBazelQueryResponse(ctx, bazelModuleLabel)