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/common_compiler_test.cc b/compiler/common_compiler_test.cc
index 638b897..c7c1907 100644
--- a/compiler/common_compiler_test.cc
+++ b/compiler/common_compiler_test.cc
@@ -142,10 +142,7 @@
   mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), loader);
   CHECK(klass != nullptr) << "Class not found " << class_name;
   size_t pointer_size = class_linker_->GetImagePointerSize();
-  for (auto& m : klass->GetDirectMethods(pointer_size)) {
-    MakeExecutable(&m);
-  }
-  for (auto& m : klass->GetVirtualMethods(pointer_size)) {
+  for (auto& m : klass->GetMethods(pointer_size)) {
     MakeExecutable(&m);
   }
 }
@@ -259,10 +256,7 @@
   mirror::Class* klass = class_linker_->FindClass(self, class_descriptor.c_str(), loader);
   CHECK(klass != nullptr) << "Class not found " << class_name;
   auto pointer_size = class_linker_->GetImagePointerSize();
-  for (auto& m : klass->GetDirectMethods(pointer_size)) {
-    CompileMethod(&m);
-  }
-  for (auto& m : klass->GetVirtualMethods(pointer_size)) {
+  for (auto& m : klass->GetMethods(pointer_size)) {
     CompileMethod(&m);
   }
 }