Remove object_utils.h.

Break into object_lock, field_helper and method_helper.
Clean up header files following this.
Also tidy some of the Handle code in response to compiler errors when resolving
the changes in this CL.

Change-Id: I73e63015a0f02a754d0866bfaf58208aebcaa295
diff --git a/runtime/object_lock.h b/runtime/object_lock.h
new file mode 100644
index 0000000..acddc03
--- /dev/null
+++ b/runtime/object_lock.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011 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_OBJECT_LOCK_H_
+#define ART_RUNTIME_OBJECT_LOCK_H_
+
+#include "base/macros.h"
+#include "base/mutex.h"
+#include "handle.h"
+
+namespace art {
+
+class Thread;
+
+template <typename T>
+class ObjectLock {
+ public:
+  ObjectLock(Thread* self, Handle<T> object) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  ~ObjectLock() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void WaitIgnoringInterrupts() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void Notify() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void NotifyAll() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+ private:
+  Thread* const self_;
+  Handle<T> const obj_;
+
+  DISALLOW_COPY_AND_ASSIGN(ObjectLock);
+};
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_OBJECT_LOCK_H_