Don't include system vulkan header when building skia files.

With this change clients will still have to have vulkan/vulkan_core.h
on their include path when compiling files that include Skia. However,
it will not be required when compiling Skia files.

Bug: skia:
Change-Id: I1cd75f4f18d3097c8a1606c3e8a51a371b01b565
Reviewed-on: https://skia-review.googlesource.com/c/179560
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/vk/GrVkDescriptorSetManager.h b/src/gpu/vk/GrVkDescriptorSetManager.h
index 64bde8f..b69fe36 100644
--- a/src/gpu/vk/GrVkDescriptorSetManager.h
+++ b/src/gpu/vk/GrVkDescriptorSetManager.h
@@ -8,13 +8,12 @@
 #ifndef GrVkDescriptorSetManager_DEFINED
 #define GrVkDescriptorSetManager_DEFINED
 
-#include "GrVkVulkan.h"
-
 #include "GrResourceHandle.h"
 #include "GrVkDescriptorPool.h"
 #include "GrVkSampler.h"
 #include "SkRefCnt.h"
 #include "SkTArray.h"
+#include "vk/GrVkTypes.h"
 
 class GrVkDescriptorSet;
 class GrVkGpu;