AAPT2: Propagate SPEC_OVERLAYABLE flag to final APK

Resources can be marked as overlayable, which means they can
be overlaid by runtime resource overlays.

This change propagates this state to the final resource table that
is installed on device.

Future work:
- Have the idmap tool respect the overlayable state and ignore
  entries that overlay anything else.

Bug: 64980941
Test: make aapt2_tests
Change-Id: Id45b1e141a281be2ee32a4ac3096fcf1114d523b

tools/aapt2/java/JavaClassGenerator.cpp

@@ -191,14 +191,14 @@ JavaClassGenerator::JavaClassGenerator(IAaptContext* context,
                                        const JavaClassGeneratorOptions& options)
     : context_(context), table_(table), options_(options) {}
 
-bool JavaClassGenerator::SkipSymbol(SymbolState state) {
+bool JavaClassGenerator::SkipSymbol(Visibility::Level level) {
   switch (options_.types) {
     case JavaClassGeneratorOptions::SymbolTypes::kAll:
       return false;
     case JavaClassGeneratorOptions::SymbolTypes::kPublicPrivate:
-      return state == SymbolState::kUndefined;
+      return level == Visibility::Level::kUndefined;
     case JavaClassGeneratorOptions::SymbolTypes::kPublic:
-      return state != SymbolState::kPublic;
+      return level != Visibility::Level::kPublic;
   }
   return true;
 }
@@ -444,8 +444,8 @@ void JavaClassGenerator::ProcessResource(const ResourceNameRef& name, const Reso
     AnnotationProcessor* processor = resource_member->GetCommentBuilder();
 
     // Add the comments from any <public> tags.
-    if (entry.symbol_status.state != SymbolState::kUndefined) {
-      processor->AppendComment(entry.symbol_status.comment);
+    if (entry.visibility.level != Visibility::Level::kUndefined) {
+      processor->AppendComment(entry.visibility.comment);
     }
 
     // Add the comments from all configurations of this entry.
@@ -484,7 +484,7 @@ void JavaClassGenerator::ProcessResource(const ResourceNameRef& name, const Reso
 Maybe<std::string> JavaClassGenerator::UnmangleResource(const StringPiece& package_name,
                                                         const StringPiece& package_name_to_generate,
                                                         const ResourceEntry& entry) {
-  if (SkipSymbol(entry.symbol_status.state)) {
+  if (SkipSymbol(entry.visibility.level)) {
     return {};
   }