Merge GrVkAttachment into GrVkImage.

Bug: skia:12402
Change-Id: I743724f66db8d7666d4d627d6945ce6bc3dc6bc3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/448261
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/vk/GrVkMSAALoadManager.cpp b/src/gpu/vk/GrVkMSAALoadManager.cpp
index e2cb496..fdd3fca 100644
--- a/src/gpu/vk/GrVkMSAALoadManager.cpp
+++ b/src/gpu/vk/GrVkMSAALoadManager.cpp
@@ -117,7 +117,7 @@
                                               GrVkCommandBuffer* commandBuffer,
                                               const GrVkRenderPass& renderPass,
                                               GrAttachment* dst,
-                                              GrVkAttachment* src,
+                                              GrVkImage* src,
                                               const SkIRect& rect) {
     if (!dst) {
         return false;