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/GrVkResourceProvider.h b/src/gpu/vk/GrVkResourceProvider.h
index 72d0b60..4b0e00a 100644
--- a/src/gpu/vk/GrVkResourceProvider.h
+++ b/src/gpu/vk/GrVkResourceProvider.h
@@ -8,8 +8,6 @@
 #ifndef GrVkResourceProvider_DEFINED
 #define GrVkResourceProvider_DEFINED
 
-#include "GrVkVulkan.h"
-
 #include "GrResourceHandle.h"
 #include "GrVkDescriptorPool.h"
 #include "GrVkDescriptorSetManager.h"
@@ -23,6 +21,7 @@
 #include "SkTArray.h"
 #include "SkTDynamicHash.h"
 #include "SkTInternalLList.h"
+#include "vk/GrVkTypes.h"
 
 #include <mutex>
 #include <thread>