Revert "Revert "Combine direct_methods_ and virtual_methods_ fields of mirror::Class""

This reverts commit ae358c1d5cef227b44d6f4971b79e1ab91aa26eb.

Bug: 24618811

Change-Id: I8becf9bae3258450b90cfef5e79589db7c535a4d
diff --git a/compiler/oat_test.cc b/compiler/oat_test.cc
index eea5204..451aa68 100644
--- a/compiler/oat_test.cc
+++ b/compiler/oat_test.cc
@@ -238,12 +238,12 @@
       ++method_index;
     }
     size_t visited_virtuals = 0;
-    for (auto& m : klass->GetVirtualMethods(pointer_size)) {
-      if (!m.IsMiranda()) {
-        CheckMethod(&m, oat_class.GetOatMethod(method_index), dex_file);
-        ++method_index;
-        ++visited_virtuals;
-      }
+    // TODO We should also check copied methods in this test.
+    for (auto& m : klass->GetDeclaredVirtualMethods(pointer_size)) {
+      EXPECT_FALSE(m.IsMiranda());
+      CheckMethod(&m, oat_class.GetOatMethod(method_index), dex_file);
+      ++method_index;
+      ++visited_virtuals;
     }
     EXPECT_EQ(visited_virtuals, num_virtual_methods);
   }