Set up cache in vulkan to reuse GrVkPrograms (aka VkPipelines)

src/gpu/vk/GrVkGpu.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrVkGpu_DEFINED
 #define GrVkGpu_DEFINED
 
 #include "GrGpu.h"
 #include "GrGpuFactory.h"
 #include "GrVkCaps.h"
 #include "GrVkIndexBuffer.h"
-#include "GrVkProgram.h"
 #include "GrVkResourceProvider.h"
 #include "GrVkVertexBuffer.h"
 #include "GrVkUtil.h"
 
 #include "shaderc/shaderc.h"
 #include "vulkan/vulkan.h"
 
 class GrPipeline;
 class GrNonInstancedMesh;
 
 class GrVkBufferImpl;
 class GrVkCommandBuffer;
 class GrVkPipeline;
+class GrVkPipelineState;
 class GrVkRenderPass;
 class GrVkTexture;
 struct GrVkInterface;
 
 #ifdef SK_DEBUG
 #define ENABLE_VK_LAYERS
 #endif
 
 class GrVkGpu : public GrGpu {
 public:
@@ skipping 138 matching lines @@
     }
 
     void onResolveRenderTarget(GrRenderTarget* target) override {
         SkDebugf("onResolveRenderTarget not yet implemented for Vulkan\n");
     }
 
     bool prepareDrawState(const GrPipeline&,
                           const GrPrimitiveProcessor&,
                           GrPrimitiveType,
                           const GrVkRenderPass&,
-                          GrVkProgram** program);
+                          GrVkPipelineState** pipelineState);
 
     // Bind vertex and index buffers
     void bindGeometry(const GrPrimitiveProcessor&, const GrNonInstancedMesh&);
 
     // Ends and submits the current command buffer to the queue and then creates a new command
     // buffer and begins it. If sync is set to kForce_SyncQueue, the function will wait for all 
     // work in the queue to finish before returning.
     void submitCommandBuffer(SyncQueue sync);
 
     void copySurfaceAsCopyImage(GrSurface* dst,
@@ skipping 32 matching lines @@
     shaderc_compiler_t fCompiler;
 
     // This is only for our current testing and building. The client should be holding on to the
     // VkInstance.
     VkInstance                        fVkInstance;
 
     typedef GrGpu INHERITED;
 };
 
 #endif