Add WSI functions to GrVkInterface

src/gpu/vk/GrVkPipelineState.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 GrVkPipelineState_DEFINED
 #define GrVkPipelineState_DEFINED
 
 #include "GrVkImage.h"
 #include "GrVkProgramDesc.h"
 #include "GrVkPipelineStateDataManager.h"
 #include "glsl/GrGLSLProgramBuilder.h"
 
-#include "vulkan/vulkan.h"
+#include "vk/GrVkDefines.h"
 
 class GrPipeline;
 class GrVkCommandBuffer;
 class GrVkDescriptorPool;
 class GrVkGpu;
 class GrVkImageView;
 class GrVkPipeline;
 class GrVkSampler;
 class GrVkUniformBuffer;
 
@@ skipping 249 matching lines @@
 
     DescriptorPoolManager fSamplerPoolManager;
     DescriptorPoolManager fUniformPoolManager;
 
     int fNumSamplers;
 
     friend class GrVkPipelineStateBuilder;
 };
 
 #endif