[dawn] Add bug for concurrent dispatching msl

Bug: 425987598
Change-Id: Ie19732b0cde4f7927b8e0e3eb1b5b3a29de8b7d0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/247716
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Peter McNeeley <petermcneeley@google.com>
diff --git a/src/dawn/native/metal/CommandBufferMTL.mm b/src/dawn/native/metal/CommandBufferMTL.mm
index 8970efb..0ae4096 100644
--- a/src/dawn/native/metal/CommandBufferMTL.mm
+++ b/src/dawn/native/metal/CommandBufferMTL.mm
@@ -159,7 +159,7 @@
     MTLComputePassDescriptor* descriptor = descriptorRef.Get();
     // MTLDispatchTypeSerial is the same dispatch type as the deafult MTLComputeCommandEncoder.
     // MTLDispatchTypeConcurrent requires memory barriers to ensure multiple commands synchronize
-    // access to the same resources, which we may support it later.
+    // access to the same resources, which we may support it later. See crbug.com/425987598
     descriptor.dispatchType = MTLDispatchTypeSerial;
 
     SetSampleBufferAttachments(descriptor, computePass);