Unify DescriptorPools for vulkan uniform descriptor sets

src/gpu/vk/GrVkDescriptorPool.h

Index: src/gpu/vk/GrVkDescriptorPool.h
diff --git a/src/gpu/vk/GrVkDescriptorPool.h b/src/gpu/vk/GrVkDescriptorPool.h
index bb5697c26f80ddf4148cec033ff51fe77226e756..8fcc67086ca33cb7dc62329ac0b8b1b78ea70280 100644
--- a/src/gpu/vk/GrVkDescriptorPool.h
+++ b/src/gpu/vk/GrVkDescriptorPool.h
@@ -21,7 +21,7 @@ class GrVkGpu;
  */
 class GrVkDescriptorPool : public GrVkResource {
 public:
-    explicit GrVkDescriptorPool(const GrVkGpu* gpu, VkDescriptorType type, uint32_t count);
+    GrVkDescriptorPool(const GrVkGpu* gpu, VkDescriptorType type, uint32_t count);
 
     VkDescriptorPool descPool() const { return fDescPool; }