Add vulkan files into skia repo.

src/gpu/vk/GrVkPipeline.h

+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef GrVkPipeline_DEFINED
+#define GrVkPipeline_DEFINED
+
+#include "GrTypes.h"
+
+#include "GrVkResource.h"
+
+#include "vulkan/vulkan.h"
+
+class GrNonInstancedVertices;
+class GrPipeline;
+class GrPrimitiveProcessor;
+class GrVkGpu;
+class GrVkRenderPass;
+
+class GrVkPipeline : public GrVkResource {
+public:
+    static GrVkPipeline* Create(GrVkGpu* gpu, 
+                                const GrPipeline& pipeline,
+                                const GrPrimitiveProcessor& primProc,
+                                VkPipelineShaderStageCreateInfo* shaderStageInfo,
+                                int shaderStageCount,
+                                GrPrimitiveType primitiveType,
+                                const GrVkRenderPass& renderPass,
+                                VkPipelineLayout layout);
+
+    VkPipeline pipeline() const { return fPipeline; }
+
+private:
+    GrVkPipeline(VkPipeline pipeline) : INHERITED(), fPipeline(pipeline) {}
+
+    GrVkPipeline(const GrVkPipeline&);
+    GrVkPipeline& operator=(const GrVkPipeline&);
+
+    void freeGPUData(const GrVkGpu* gpu) const override;
+
+    VkPipeline  fPipeline;
+
+    typedef GrVkResource INHERITED;
+};
+
+#endif