Add a flag (-G) to aapt to have it output the classes that shouldn't be obfuscated by ProGuard.
diff --git a/tools/aapt/Main.h b/tools/aapt/Main.h
index 34ca5e5..3ba4f39 100644
--- a/tools/aapt/Main.h
+++ b/tools/aapt/Main.h
@@ -33,6 +33,8 @@
 extern android::status_t writeResourceSymbols(Bundle* bundle,
     const sp<AaptAssets>& assets, const String8& pkgName, bool includePrivate);
 
+extern android::status_t writeProguardFile(Bundle* bundle, const sp<AaptAssets>& assets);
+
 extern bool isValidResourceType(const String8& type);
 
 ssize_t processAssets(Bundle* bundle, ZipFile* zip, const sp<AaptAssets>& assets);
@@ -41,4 +43,7 @@
 
 int dumpResources(Bundle* bundle);
 
+String8 getAttribute(const ResXMLTree& tree, const char* ns,
+                            const char* attr, String8* outError);
+
 #endif // __MAIN_H