Add support for getting vulkan descriptor sets without a GrVkUniformHandler.

src/gpu/vk/GrVkResourceProvider.cpp

Index: src/gpu/vk/GrVkResourceProvider.cpp
diff --git a/src/gpu/vk/GrVkResourceProvider.cpp b/src/gpu/vk/GrVkResourceProvider.cpp
index b1817cf3ea2e7ba1b626bdfb4fe71ab9a71986a4..e581384ddfb4800f9f688a3da9fddc2a95fdce1a 100644
--- a/src/gpu/vk/GrVkResourceProvider.cpp
+++ b/src/gpu/vk/GrVkResourceProvider.cpp
@@ -177,6 +177,22 @@ void GrVkResourceProvider::getSamplerDescriptorSetHandle(const GrVkUniformHandle
     *handle = GrVkDescriptorSetManager::Handle(fDescriptorSetManagers.count() - 1);
 }
 
+void GrVkResourceProvider::getSamplerDescriptorSetHandle(const SkTArray<uint32_t>& visibilities,
+                                                         GrVkDescriptorSetManager::Handle* handle) {
+    SkASSERT(handle);
+    for (int i = 0; i < fDescriptorSetManagers.count(); ++i) {
+        if (fDescriptorSetManagers[i].isCompatible(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+                                                   visibilities)) {
+            *handle = GrVkDescriptorSetManager::Handle(i);
+            return;
+        }
+    }
+
+    fDescriptorSetManagers.emplace_back(fGpu, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+                                        visibilities);
+    *handle = GrVkDescriptorSetManager::Handle(fDescriptorSetManagers.count() - 1);
+}
+
 VkDescriptorSetLayout GrVkResourceProvider::getUniformDSLayout() const {
     SkASSERT(fUniformDSHandle.isValid());
     return fDescriptorSetManagers[fUniformDSHandle.toIndex()].layout();