Fix missing include for std::unique_ptr in VulkanBinding.cpp

Bug: dawn:100
Change-Id: Ied470aca31dba15e704ec6c737b01e3ff344b240
Reviewed-on: https://dawn-review.googlesource.com/c/4380
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/utils/VulkanBinding.cpp b/src/utils/VulkanBinding.cpp
index 72baa71..c071415 100644
--- a/src/utils/VulkanBinding.cpp
+++ b/src/utils/VulkanBinding.cpp
@@ -20,6 +20,8 @@
 // Include GLFW after VulkanBackend so that it declares the Vulkan-specific functions
 #include "GLFW/glfw3.h"
 
+#include <memory>
+
 namespace utils {
 
     class VulkanBinding : public BackendBinding {