Include windows.h in debug windows vulkan to fix build.

Bug: skia:
Change-Id: Iffe16e9d179fe63c68851bc2d421f56113c302ad
Reviewed-on: https://skia-review.googlesource.com/144789
Commit-Queue: Greg Daniel <egdaniel@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Auto-Submit: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index a62f2fd..9a17b73 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -44,6 +44,10 @@
 #include <unistd.h>
 #endif // !defined(SK_BUILD_FOR_WIN)
 
+#if defined(SK_BUILD_FOR_WIN) && defined(SK_DEBUG)
+#include "SkLeanWindows.h"
+#endif
+
 #define VK_CALL(X) GR_VK_CALL(this->vkInterface(), X)
 #define VK_CALL_RET(RET, X) GR_VK_CALL_RET(this->vkInterface(), RET, X)
 #define VK_CALL_ERRCHECK(X) GR_VK_CALL_ERRCHECK(this->vkInterface(), X)