Move vulkan spir-v compile call to GrVkUtil

src/gpu/vk/GrVkUtil.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 GrVkUtil_DEFINED
 #define GrVkUtil_DEFINED
 
 #include "GrColor.h"
 #include "GrTypes.h"
+#include "vk/GrVkDefines.h"
 #include "vk/GrVkInterface.h"
 
-#include "vk/GrVkDefines.h"
+class GrVkGpu;
 
 // makes a Vk call on the interface
 #define GR_VK_CALL(IFACE, X) (IFACE)->fFunctions.f##X;
 // same as GR_VK_CALL but checks for success
 #ifdef SK_DEBUG
 #define GR_VK_CALL_ERRCHECK(IFACE, X) \
     VkResult SK_MACRO_APPEND_LINE(ret) = GR_VK_CALL(IFACE, X); \
     SkASSERT(VK_SUCCESS == SK_MACRO_APPEND_LINE(ret));
 #else
 #define GR_VK_CALL_ERRCHECK(IFACE, X)  (void) GR_VK_CALL(IFACE, X);
@@ skipping 10 matching lines @@
 bool GrVkFormatToPixelConfig(VkFormat format, GrPixelConfig* config);
 
 /**
  * Returns true if the given vulkan texture format is sRGB encoded.
  * Also provides the non-sRGB version, if there is one.
  */
 bool GrVkFormatIsSRGB(VkFormat format, VkFormat* linearFormat);
 
 bool GrSampleCountToVkSampleCount(uint32_t samples, VkSampleCountFlagBits* vkSamples);
 
+bool GrCompileVkShaderModule(const GrVkGpu* gpu,
+                             const char* shaderString,
+                             VkShaderStageFlagBits stage,
+                             VkShaderModule* shaderModule,
+                             VkPipelineShaderStageCreateInfo* stageInfo);
+
 #endif