Refactor java.lang.reflect implementation

Cherry-picked from commit ed41d5c44299ec5d44b8514f6e17f802f48094d1.

Move to ArtMethod/Field instead of AbstractMethod/Field and have
java.lang.reflect APIs delegate to ArtMethod/ArtField.

Bug: 10014286.

Change-Id: Iafc1d8c5b62562c9af8fb9fd8c5e1d61270536e7
diff --git a/test/StackWalk/stack_walk_jni.cc b/test/StackWalk/stack_walk_jni.cc
index 8f4aae6..528586e 100644
--- a/test/StackWalk/stack_walk_jni.cc
+++ b/test/StackWalk/stack_walk_jni.cc
@@ -19,8 +19,8 @@
 #include "UniquePtr.h"
 #include "class_linker.h"
 #include "gc_map.h"
-#include "mirror/abstract_method.h"
-#include "mirror/abstract_method-inl.h"
+#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object_array-inl.h"
 #include "mirror/object-inl.h"
@@ -50,7 +50,7 @@
   }
 
   bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    mirror::AbstractMethod* m = GetMethod();
+    mirror::ArtMethod* m = GetMethod();
     CHECK(m != NULL);
     LOG(INFO) << "At " << PrettyMethod(m, false);