ART: Fix type parameter in tests

Move Class to Class<?>, Constructor to Constructor<?>, and in
general clean up reflection.

Test: m test-art-host-run-test
Change-Id: I3a4223ee8d14d032015edf34bf27135757f7138c
diff --git a/test/497-inlining-and-class-loader/src/Main.java b/test/497-inlining-and-class-loader/src/Main.java
index 832b1f0..1e27e77 100644
--- a/test/497-inlining-and-class-loader/src/Main.java
+++ b/test/497-inlining-and-class-loader/src/Main.java
@@ -66,7 +66,7 @@
             "loadClassBinaryName", String.class, ClassLoader.class, List.class);
 
         if (dex != null) {
-          Class clazz = (Class)method.invoke(dex, className, this, null);
+          Class<?> clazz = (Class<?>)method.invoke(dex, className, this, null);
           if (clazz != null) {
             return clazz;
           }
@@ -92,7 +92,7 @@
 
     MyClassLoader o = new MyClassLoader();
     MyClassLoader.level1ClassLoader = new MyClassLoader();
-    Class foo = o.loadClass("LoadedByMyClassLoader");
+    Class<?> foo = o.loadClass("LoadedByMyClassLoader");
     Method m = foo.getDeclaredMethod("bar");
     try {
       m.invoke(null);