Add static buffer support

Put resource tracking check in the right place

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2112653002

Review-Url: https://codereview.chromium.org/2112653002
diff --git a/src/gpu/vk/GrVkGpu.h b/src/gpu/vk/GrVkGpu.h
index 011189a..3373abd 100644
--- a/src/gpu/vk/GrVkGpu.h
+++ b/src/gpu/vk/GrVkGpu.h
@@ -125,6 +125,8 @@
 
     void generateMipmap(GrVkTexture* tex) const;
 
+    bool updateBuffer(GrVkBuffer* buffer, const void* src, size_t srcSizeInBytes);
+
     // Heaps
     enum Heap {
         kLinearImage_Heap = 0,