Change VkPipelineStateCahce to use Hash and LRU LList.

src/gpu/vk/GrVkGpu.cpp

Index: src/gpu/vk/GrVkGpu.cpp
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index c4c32d12ff644a8ee265e9a192660ea5bc42e67a..cbd233f3b1d6b07f9d74b796b5b3ff936bef560f 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -1297,12 +1297,12 @@ bool GrVkGpu::prepareDrawState(const GrPipeline& pipeline,
                                const GrPrimitiveProcessor& primProc,
                                GrPrimitiveType primitiveType,
                                const GrVkRenderPass& renderPass,
-                               GrVkPipelineState** pipelineState) {
+                               sk_sp<GrVkPipelineState>* pipelineState) {
     *pipelineState = fResourceProvider.findOrCreateCompatiblePipelineState(pipeline,
                                                                            primProc,
                                                                            primitiveType,
                                                                            renderPass);
-    if (!pipelineState) {
+    if (!*pipelineState) {
         return false;
     }
 
@@ -1329,7 +1329,7 @@ void GrVkGpu::onDraw(const GrPipeline& pipeline,
 
     fCurrentCmdBuffer->beginRenderPass(this, renderPass, *vkRT);
 
-    GrVkPipelineState* pipelineState = nullptr;
+    sk_sp<GrVkPipelineState> pipelineState = nullptr;
     GrPrimitiveType primitiveType = meshes[0].primitiveType();
     if (!this->prepareDrawState(pipeline, primProc, primitiveType, *renderPass, &pipelineState)) {
         return;
@@ -1386,7 +1386,6 @@ void GrVkGpu::onDraw(const GrPipeline& pipeline,
                 // pipelineState:setData but this will allow for quicker freeing of resources if the
                 // pipelineState sits in a cache for a while.
                 pipelineState->freeTempResources(this);
-                pipelineState->unref();
                 SkDEBUGCODE(pipelineState = nullptr);
                 primitiveType = nonIdxMesh->primitiveType();
                 if (!this->prepareDrawState(pipeline, primProc, primitiveType, *renderPass,
@@ -1422,7 +1421,6 @@ void GrVkGpu::onDraw(const GrPipeline& pipeline,
     // pipelineState:setData but this will allow for quicker freeing of resources if the
     // pipelineState sits in a cache for a while.
     pipelineState->freeTempResources(this);
-    pipelineState->unref();
 
 #if SWAP_PER_DRAW
     glFlush();