Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
diff --git a/runtime/interpreter/interpreter.h b/runtime/interpreter/interpreter.h
index 7d634b3..446c5bb 100644
--- a/runtime/interpreter/interpreter.h
+++ b/runtime/interpreter/interpreter.h
@@ -22,10 +22,10 @@
 
 namespace art {
 namespace mirror {
-class ArtMethod;
 class Object;
 }  // namespace mirror
 
+class ArtMethod;
 union JValue;
 class ShadowFrame;
 class Thread;
@@ -33,7 +33,7 @@
 namespace interpreter {
 
 // Called by ArtMethod::Invoke, shadow frames arguments are taken from the args array.
-extern void EnterInterpreterFromInvoke(Thread* self, mirror::ArtMethod* method,
+extern void EnterInterpreterFromInvoke(Thread* self, ArtMethod* method,
                                        mirror::Object* receiver, uint32_t* args, JValue* result)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);