Add static buffer support

src/gpu/vk/GrVkUniformBuffer.h

Index: src/gpu/vk/GrVkUniformBuffer.h
diff --git a/src/gpu/vk/GrVkUniformBuffer.h b/src/gpu/vk/GrVkUniformBuffer.h
index 37ede72979b018c46227056e1373789529f10615..bfaf240a65f69a90a327903834c4d473d8262762 100644
--- a/src/gpu/vk/GrVkUniformBuffer.h
+++ b/src/gpu/vk/GrVkUniformBuffer.h
@@ -25,7 +25,7 @@ public:
     }
     // The output variable createdNewBuffer must be set to true if a new VkBuffer is created in
     // order to upload the data
-    bool updateData(const GrVkGpu* gpu, const void* src, size_t srcSizeInBytes,
+    bool updateData(GrVkGpu* gpu, const void* src, size_t srcSizeInBytes,
                     bool* createdNewBuffer) {
         return this->vkUpdateData(gpu, src, srcSizeInBytes, createdNewBuffer);
     }