ObjPtr<>-ify mirror::Field and mirror::Executable.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 31113334
Change-Id: Ib536df95543cb7240a5816bef019391bb90e6369
diff --git a/runtime/mirror/executable-inl.h b/runtime/mirror/executable-inl.h
new file mode 100644
index 0000000..6d4b46a
--- /dev/null
+++ b/runtime/mirror/executable-inl.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_MIRROR_EXECUTABLE_INL_H_
+#define ART_RUNTIME_MIRROR_EXECUTABLE_INL_H_
+
+#include "executable.h"
+
+#include "object-inl.h"
+
+namespace art {
+namespace mirror {
+
+template <bool kTransactionActive,
+          bool kCheckTransaction,
+          VerifyObjectFlags kVerifyFlags>
+inline void Executable::SetArtMethod(ArtMethod* method) {
+  SetField64<kTransactionActive, kCheckTransaction, kVerifyFlags>(
+      ArtMethodOffset(), reinterpret_cast64<uint64_t>(method));
+}
+
+inline ObjPtr<mirror::Class> Executable::GetDeclaringClass() {
+  return GetFieldObject<mirror::Class>(DeclaringClassOffset());
+}
+
+}  // namespace mirror
+}  // namespace art
+
+#endif  // ART_RUNTIME_MIRROR_EXECUTABLE_INL_H_