Move vulkan spir-v compile call to GrVkUtil

src/gpu/vk/GrVkUtil.h

Index: src/gpu/vk/GrVkUtil.h
diff --git a/src/gpu/vk/GrVkUtil.h b/src/gpu/vk/GrVkUtil.h
index b81aff4ae36769aac5982ff8a0744fbda2ed9a26..fae3c200d8a301981de2c1f46b8e87c3759bd4e3 100644
--- a/src/gpu/vk/GrVkUtil.h
+++ b/src/gpu/vk/GrVkUtil.h
@@ -10,9 +10,10 @@
 
 #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;
@@ -43,4 +44,10 @@ 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