Fix vulkan include path (flutter#4870)

zanderso · web-flow · commit d9ec2de7d081 · 2018-03-26T14:05:25.000-07:00
diff --git a/vulkan/skia_vulkan_header.h b/vulkan/skia_vulkan_header.h
@@ -8,4 +8,4 @@
 #endif  // VK_USE_PLATFORM_ANDROID_KHR
 #endif  // __ANDROID__
 
-#include "third_party/vulkan/src/vulkan/vulkan.h"
+#include "vulkan/vulkan.h"
