Change VkPipelineStateCahce to use Hash and LRU LList.

src/gpu/vk/GrVkResourceProvider.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "GrVkResourceProvider.h"
 
 #include "GrTextureParams.h"
@@ skipping 78 matching lines @@
     GrVkSampler* sampler = fSamplers.find(GrVkSampler::GenerateKey(params));
     if (!sampler) {
         sampler = GrVkSampler::Create(fGpu, params);
         fSamplers.add(sampler);
     }
     SkASSERT(sampler);
     sampler->ref();
     return sampler;
 }
 
-GrVkPipelineState* GrVkResourceProvider::findOrCreateCompatiblePipelineState(
+sk_sp<GrVkPipelineState> GrVkResourceProvider::findOrCreateCompatiblePipelineState(
                                                                  const GrPipeline& pipeline,
                                                                  const GrPrimitiveProcessor& proc,
                                                                  GrPrimitiveType primitiveType,
                                                                  const GrVkRenderPass& renderPass) {
     return fPipelineStateCache->refPipelineState(pipeline, proc, primitiveType, renderPass);
 }
 
 GrVkCommandBuffer* GrVkResourceProvider::createCommandBuffer() {
     GrVkCommandBuffer* cmdBuffer = GrVkCommandBuffer::Create(fGpu, fGpu->cmdPool());
     fActiveCommandBuffers.push_back(cmdBuffer);
@@ skipping 62 matching lines @@
     }
     fSamplers.reset();
 
     fPipelineStateCache->abandon();
 
 #ifdef SK_TRACE_VK_RESOURCES
     SkASSERT(0 == GrVkResource::fTrace.count());
 #endif
     fPipelineCache = VK_NULL_HANDLE;
 }