Fully implement onResetContext for Vulkan

src/gpu/vk/GrVkGpu.h

Index: src/gpu/vk/GrVkGpu.h
diff --git a/src/gpu/vk/GrVkGpu.h b/src/gpu/vk/GrVkGpu.h
index c39973a4e786c2be20bcce10f98f5cb7a7083d4b..a686c721fd9f48b33bce58dbb49c6b114d10744d 100644
--- a/src/gpu/vk/GrVkGpu.h
+++ b/src/gpu/vk/GrVkGpu.h
@@ -124,9 +124,7 @@ public:
     void finishDrawTarget() override;
 
 private:
-    void onResetContext(uint32_t resetBits) override {
-        SkDebugf("onResetContext not yet implemented for Vulkan\n");
-    }
+    void onResetContext(uint32_t resetBits) override {}
 
     GrTexture* onCreateTexture(const GrSurfaceDesc& desc, GrGpuResource::LifeCycle,
                                const SkTArray<GrMipLevel>&) override;