Recycle small uniform buffers.

src/gpu/vk/GrVkPipelineState.cpp

Index: src/gpu/vk/GrVkPipelineState.cpp
diff --git a/src/gpu/vk/GrVkPipelineState.cpp b/src/gpu/vk/GrVkPipelineState.cpp
index b9aa826375d6cd9e4362393631171c15fb1368c6..ab9cff8d1b73459b413abb6deb5c1926f50f92fe 100644
--- a/src/gpu/vk/GrVkPipelineState.cpp
+++ b/src/gpu/vk/GrVkPipelineState.cpp
@@ -68,8 +68,8 @@ GrVkPipelineState::GrVkPipelineState(GrVkGpu* gpu,
         fStartDS = SkTMin(fStartDS, (int)GrVkUniformHandler::kSamplerDescSet);
     }
 
-    fVertexUniformBuffer.reset(GrVkUniformBuffer::Create(gpu, vertexUniformSize, true));
-    fFragmentUniformBuffer.reset(GrVkUniformBuffer::Create(gpu, fragmentUniformSize, true));
+    fVertexUniformBuffer.reset(GrVkUniformBuffer::Create(gpu, vertexUniformSize));
+    fFragmentUniformBuffer.reset(GrVkUniformBuffer::Create(gpu, fragmentUniformSize));
 
     fNumSamplers = numSamplers;
 }