Only keep default constructor of manifest items

Reflection-based instantiation of manifest-declared types is only done on the default (aka no-argument) constructor. While these types are unlikely to have alternate constructors (unlike the others listed in the bug), there's no reason to generate overly keep-y rules for them.

Bug: 37123156
Test: make aapt2_tests
Change-Id: Ic83a2671a54ea5dd558bfcacf033a60e9568ab8c
diff --git a/tools/aapt2/java/ProguardRules.cpp b/tools/aapt2/java/ProguardRules.cpp
index 2857d5a..d7ebd8c 100644
--- a/tools/aapt2/java/ProguardRules.cpp
+++ b/tools/aapt2/java/ProguardRules.cpp
@@ -365,7 +365,7 @@
     for (const UsageLocation& location : entry.second) {
       printer.Print("# Referenced at ").Println(location.source.to_string());
     }
-    printer.Print("-keep class ").Print(entry.first).Println(" { <init>(...); }");
+    printer.Print("-keep class ").Print(entry.first).Println(" { <init>(); }");
   }
 
   for (const auto& entry : keep_set.conditional_class_set_) {