Allow exporting of sdk members to be done per tag

Previously, every module added to an sdk directly through one of the
SdkMemberType specific properties, e.g. java_libs, was exported and
every module added automatically via a transitive dependencies was not
exported. This change allows that behavior to be customized per tag.

Bug: 186290299
Test: m art-module-sdk
      - verify that this change does not affect its contents.
Change-Id: I563b5bcd823e61c23cdb706cfcbb13337963d550
diff --git a/sdk/sdk.go b/sdk/sdk.go
index 710c1f2..1c6002a 100644
--- a/sdk/sdk.go
+++ b/sdk/sdk.go
@@ -193,7 +193,8 @@
 
 			memberType: memberType,
 
-			dependencyTag: android.DependencyTagForSdkMemberType(memberType),
+			// Dependencies added directly from member properties are always exported.
+			dependencyTag: android.DependencyTagForSdkMemberType(memberType, true),
 		}
 
 		listProperties = append(listProperties, memberListProperty)
@@ -255,22 +256,6 @@
 	return s.dynamicSdkMemberTypes.memberListProperties
 }
 
-func (s *sdk) getExportedMembers() map[string]struct{} {
-	// Collect all the exported members.
-	exportedMembers := make(map[string]struct{})
-
-	for _, memberListProperty := range s.memberListProperties() {
-		names := memberListProperty.getter(s.dynamicMemberTypeListProperties)
-
-		// Every member specified explicitly in the properties is exported by the sdk.
-		for _, name := range names {
-			exportedMembers[name] = struct{}{}
-		}
-	}
-
-	return exportedMembers
-}
-
 func (s *sdk) snapshot() bool {
 	return s.properties.Snapshot
 }