Only apply apex transition to DCLA libs for now.

Bug: 270339610
Test: mixed_droid.sh
Change-Id: I6a8b7fdefeb504a25256e92647de9b487d5b65a3
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 3a459f1..e7ff08f 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -201,6 +201,8 @@
 	// (for example, that it is MixedBuildBuildable).
 	IsModuleNameAllowed(moduleName string, withinApex bool) bool
 
+	IsModuleDclaAllowed(moduleName string) bool
+
 	// Returns the bazel output base (the root directory for all bazel intermediate outputs).
 	OutputBase() string
 
@@ -341,6 +343,10 @@
 	return true
 }
 
+func (m MockBazelContext) IsModuleDclaAllowed(_ string) bool {
+	return true
+}
+
 func (m MockBazelContext) OutputBase() string { return m.OutputBaseDir }
 
 func (m MockBazelContext) BuildStatementsToRegister() []*bazel.BuildStatement {
@@ -483,6 +489,10 @@
 	return false
 }
 
+func (n noopBazelContext) IsModuleDclaAllowed(_ string) bool {
+	return false
+}
+
 func (m noopBazelContext) BuildStatementsToRegister() []*bazel.BuildStatement {
 	return []*bazel.BuildStatement{}
 }
@@ -619,13 +629,17 @@
 	if context.bazelEnabledModules[moduleName] {
 		return true
 	}
-	if withinApex && context.bazelDclaEnabledModules[moduleName] {
+	if withinApex && context.IsModuleDclaAllowed(moduleName) {
 		return true
 	}
 
 	return context.modulesDefaultToBazel
 }
 
+func (context *mixedBuildBazelContext) IsModuleDclaAllowed(moduleName string) bool {
+	return context.bazelDclaEnabledModules[moduleName]
+}
+
 func pwdPrefix() string {
 	// Darwin doesn't have /proc
 	if runtime.GOOS != "darwin" {