method_handles: Complete support for emulated stack frames.

Most of this change is a refactor that templatizes the code
that performs argument conversions. This allows us to copy arguments
between two shadow frames, or an emulated stack frame and a shadow
frame.

Test: make test-art-host
Bug: 30550796

Change-Id: I23e65735a2dbd28f3c7b7d1ccf9762e77e0cf1f1
diff --git a/runtime/Android.bp b/runtime/Android.bp
index b498573..8f961af 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -123,6 +123,7 @@
         "mirror/array.cc",
         "mirror/class.cc",
         "mirror/dex_cache.cc",
+        "mirror/emulated_stack_frame.cc",
         "mirror/executable.cc",
         "mirror/field.cc",
         "mirror/method.cc",