ArCore shim: fix copy-paste error

Change-Id: I90ddb990333b1616887834a094b11a3aad25e0bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2350740
Commit-Queue: Piotr Bialecki <bialpio@chromium.org>
Commit-Queue: Klaus Weidner <klausw@chromium.org>
Auto-Submit: Piotr Bialecki <bialpio@chromium.org>
Reviewed-by: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797092}

device/vr/android/arcore/arcore_shim.cc

@@ -724,7 +724,7 @@ void ArImage_getWidth(const ArSession* session,
 void ArImage_getHeight(const ArSession* session,
                        const ArImage* image,
                        int32_t* out_height) {
-  return g_arcore_api->impl_ArImage_getWidth(session, image, out_height);
+  return g_arcore_api->impl_ArImage_getHeight(session, image, out_height);
 }
 
 void ArImage_getFormat(const ArSession* session,