Add command buffer submits before copy calls in vulkan.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2363773006

Committed: https://skia.googlesource.com/skia/+/25661bac7722860b7589c5b01ec404531d941456
Review-Url: https://codereview.chromium.org/2363773006
diff --git a/src/gpu/vk/GrVkVaryingHandler.cpp b/src/gpu/vk/GrVkVaryingHandler.cpp
index ac3a315..f6fed21 100644
--- a/src/gpu/vk/GrVkVaryingHandler.cpp
+++ b/src/gpu/vk/GrVkVaryingHandler.cpp
@@ -1,9 +1,9 @@
 /*
-* Copyright 2016 Google Inc.
-*
-* Use of this source code is governed by a BSD-style license that can be
-* found in the LICENSE file.
-*/
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
 
 #include "GrVkVaryingHandler.h"