Revise WSI setup.

src/gpu/vk/GrVkGpu.cpp

Index: src/gpu/vk/GrVkGpu.cpp
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index 040912e73ab2754c34d082451bf07a39f16d5e87..eebb5898863d31fc8d6c298d99026077d3ec7487 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -120,7 +120,7 @@ GrVkGpu::GrVkGpu(GrContext* context, const GrContextOptions& options,
         VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO, // sType
         nullptr,                                    // pNext
         VK_COMMAND_POOL_CREATE_TRANSIENT_BIT,       // CmdPoolCreateFlags
-        backendCtx->fQueueFamilyIndex,              // queueFamilyIndex
+        backendCtx->fGraphicsQueueIndex,            // queueFamilyIndex
     };
     GR_VK_CALL_ERRCHECK(this->vkInterface(), CreateCommandPool(fDevice, &cmdPoolInfo, nullptr,
                                                                &fCmdPool));