ART: Add some reflection cutouts

Add Class.getInnerClassFlags and Method.invoke to unstarted runtime.

Allows to compile-time initialize:
* android.net.NetworkInfo
* android.net.wifi.WifiInfo

Bug: 27265238

(cherry picked from commit b3ffbe32b78c18739736fc998d65430b46c510e5)

Change-Id: I3e267519acf14b08c687f1e831e2027d37158767
diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 57c3590..5b6ded1 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -1223,6 +1223,9 @@
       Thread* self, Handle<mirror::ObjectArray<mirror::Class>> args, size_t pointer_size)
       SHARED_REQUIRES(Locks::mutator_lock_);
 
+  static int32_t GetInnerClassFlags(Handle<Class> h_this, int32_t default_value)
+      SHARED_REQUIRES(Locks::mutator_lock_);
+
   // Used to initialize a class in the allocation code path to ensure it is guarded by a StoreStore
   // fence.
   class InitializeClassVisitor {