--- webgpu_header
+++ dawn_header
@@
     WGPUChainedStruct * nextInChain;
     WGPUStringView label;
     size_t bindGroupLayoutCount;
-    WGPUBindGroupLayout const * bindGroupLayouts;
+    WGPU_NULLABLE WGPUBindGroupLayout const * bindGroupLayouts;
     uint32_t immediateSize;
 } WGPUPipelineLayoutDescriptor WGPU_STRUCTURE_ATTRIBUTE;
 
@@
 typedef WGPUInstance (*WGPUProcCreateInstance)(WGPU_NULLABLE WGPUInstanceDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 typedef void (*WGPUProcGetInstanceFeatures)(WGPUSupportedInstanceFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUStatus (*WGPUProcGetInstanceLimits)(WGPUInstanceLimits * limits) WGPU_FUNCTION_ATTRIBUTE;
+typedef WGPUProc (*WGPUProcGetProcAddress)(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUBool (*WGPUProcHasInstanceFeature)(WGPUInstanceFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
-typedef WGPUProc (*WGPUProcGetProcAddress)(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
-
 
 typedef void (*WGPUProcAdapterGetFeatures)(WGPUAdapter adapter, WGPUSupportedFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUStatus (*WGPUProcAdapterGetInfo)(WGPUAdapter adapter, WGPUAdapterInfo * info) WGPU_FUNCTION_ATTRIBUTE;
@@
 
 typedef WGPUBindGroup (*WGPUProcDeviceCreateBindGroup)(WGPUDevice device, WGPUBindGroupDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUBindGroupLayout (*WGPUProcDeviceCreateBindGroupLayout)(WGPUDevice device, WGPUBindGroupLayoutDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
-typedef WGPU_NULLABLE WGPUBuffer (*WGPUProcDeviceCreateBuffer)(WGPUDevice device, WGPUBufferDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
+typedef WGPUBuffer (*WGPUProcDeviceCreateBuffer)(WGPUDevice device, WGPUBufferDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUCommandEncoder (*WGPUProcDeviceCreateCommandEncoder)(WGPUDevice device, WGPU_NULLABLE WGPUCommandEncoderDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUComputePipeline (*WGPUProcDeviceCreateComputePipeline)(WGPUDevice device, WGPUComputePipelineDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUFuture (*WGPUProcDeviceCreateComputePipelineAsync)(WGPUDevice device, WGPUComputePipelineDescriptor const * descriptor, WGPUCreateComputePipelineAsyncCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
@@
 typedef WGPUBool (*WGPUProcInstanceHasWGSLLanguageFeature)(WGPUInstance instance, WGPUWGSLLanguageFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
 typedef void (*WGPUProcInstanceProcessEvents)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUFuture (*WGPUProcInstanceRequestAdapter)(WGPUInstance instance, WGPU_NULLABLE WGPURequestAdapterOptions const * options, WGPURequestAdapterCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
-typedef WGPUWaitStatus (*WGPUProcInstanceWaitAny)(WGPUInstance instance, size_t futureCount, WGPU_NULLABLE WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
+typedef WGPUWaitStatus (*WGPUProcInstanceWaitAny)(WGPUInstance instance, size_t futureCount, WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
 typedef void (*WGPUProcInstanceAddRef)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 typedef void (*WGPUProcInstanceRelease)(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 
@@
 typedef void (*WGPUProcShaderModuleAddRef)(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
 typedef void (*WGPUProcShaderModuleRelease)(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
 
+typedef void (*WGPUProcSupportedWGSLLanguageFeaturesFreeMembers)(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
+
 typedef void (*WGPUProcSupportedFeaturesFreeMembers)(WGPUSupportedFeatures supportedFeatures) WGPU_FUNCTION_ATTRIBUTE;
 
 typedef void (*WGPUProcSupportedInstanceFeaturesFreeMembers)(WGPUSupportedInstanceFeatures supportedInstanceFeatures) WGPU_FUNCTION_ATTRIBUTE;
-
-typedef void (*WGPUProcSupportedWGSLLanguageFeaturesFreeMembers)(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
 
 typedef void (*WGPUProcSurfaceConfigure)(WGPUSurface surface, WGPUSurfaceConfiguration const * config) WGPU_FUNCTION_ATTRIBUTE;
 typedef WGPUStatus (*WGPUProcSurfaceGetCapabilities)(WGPUSurface surface, WGPUAdapter adapter, WGPUSurfaceCapabilities * capabilities) WGPU_FUNCTION_ATTRIBUTE;
@@
 WGPU_EXPORT WGPUInstance wgpuCreateInstance(WGPU_NULLABLE WGPUInstanceDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT void wgpuGetInstanceFeatures(WGPUSupportedInstanceFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUStatus wgpuGetInstanceLimits(WGPUInstanceLimits * limits) WGPU_FUNCTION_ATTRIBUTE;
+WGPU_EXPORT WGPUProc wgpuGetProcAddress(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUBool wgpuHasInstanceFeature(WGPUInstanceFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
-WGPU_EXPORT WGPUProc wgpuGetProcAddress(WGPUStringView procName) WGPU_FUNCTION_ATTRIBUTE;
 
 WGPU_EXPORT void wgpuAdapterGetFeatures(WGPUAdapter adapter, WGPUSupportedFeatures * features) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUStatus wgpuAdapterGetInfo(WGPUAdapter adapter, WGPUAdapterInfo * info) WGPU_FUNCTION_ATTRIBUTE;
@@
 
 WGPU_EXPORT WGPUBindGroup wgpuDeviceCreateBindGroup(WGPUDevice device, WGPUBindGroupDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUBindGroupLayout wgpuDeviceCreateBindGroupLayout(WGPUDevice device, WGPUBindGroupLayoutDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
-WGPU_EXPORT WGPU_NULLABLE WGPUBuffer wgpuDeviceCreateBuffer(WGPUDevice device, WGPUBufferDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
+WGPU_EXPORT WGPUBuffer wgpuDeviceCreateBuffer(WGPUDevice device, WGPUBufferDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUCommandEncoder wgpuDeviceCreateCommandEncoder(WGPUDevice device, WGPU_NULLABLE WGPUCommandEncoderDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUComputePipeline wgpuDeviceCreateComputePipeline(WGPUDevice device, WGPUComputePipelineDescriptor const * descriptor) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUFuture wgpuDeviceCreateComputePipelineAsync(WGPUDevice device, WGPUComputePipelineDescriptor const * descriptor, WGPUCreateComputePipelineAsyncCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
@@
 WGPU_EXPORT WGPUBool wgpuInstanceHasWGSLLanguageFeature(WGPUInstance instance, WGPUWGSLLanguageFeatureName feature) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT void wgpuInstanceProcessEvents(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUFuture wgpuInstanceRequestAdapter(WGPUInstance instance, WGPU_NULLABLE WGPURequestAdapterOptions const * options, WGPURequestAdapterCallbackInfo callbackInfo) WGPU_FUNCTION_ATTRIBUTE;
-WGPU_EXPORT WGPUWaitStatus wgpuInstanceWaitAny(WGPUInstance instance, size_t futureCount, WGPU_NULLABLE WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
+WGPU_EXPORT WGPUWaitStatus wgpuInstanceWaitAny(WGPUInstance instance, size_t futureCount, WGPUFutureWaitInfo * futures, uint64_t timeoutNS) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT void wgpuInstanceAddRef(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT void wgpuInstanceRelease(WGPUInstance instance) WGPU_FUNCTION_ATTRIBUTE;
 
@@
 WGPU_EXPORT void wgpuShaderModuleAddRef(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT void wgpuShaderModuleRelease(WGPUShaderModule shaderModule) WGPU_FUNCTION_ATTRIBUTE;
 
+WGPU_EXPORT void wgpuSupportedWGSLLanguageFeaturesFreeMembers(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
+
 WGPU_EXPORT void wgpuSupportedFeaturesFreeMembers(WGPUSupportedFeatures supportedFeatures) WGPU_FUNCTION_ATTRIBUTE;
 
 WGPU_EXPORT void wgpuSupportedInstanceFeaturesFreeMembers(WGPUSupportedInstanceFeatures supportedInstanceFeatures) WGPU_FUNCTION_ATTRIBUTE;
-
-WGPU_EXPORT void wgpuSupportedWGSLLanguageFeaturesFreeMembers(WGPUSupportedWGSLLanguageFeatures supportedWGSLLanguageFeatures) WGPU_FUNCTION_ATTRIBUTE;
 
 WGPU_EXPORT void wgpuSurfaceConfigure(WGPUSurface surface, WGPUSurfaceConfiguration const * config) WGPU_FUNCTION_ATTRIBUTE;
 WGPU_EXPORT WGPUStatus wgpuSurfaceGetCapabilities(WGPUSurface surface, WGPUAdapter adapter, WGPUSurfaceCapabilities * capabilities) WGPU_FUNCTION_ATTRIBUTE;