message: Fix -Wc++11-narrowing on ChromeOS
diff: @@ -180,7 +180,8 @@ namespace dawn_native { namespace vulkan { namespace external_memory {
  if (memoryTypeIndex == -1) {
  return DAWN_VALIDATION_ERROR("Unable to find appropriate memory type for import");
  }
  - MemoryImportParams params = {memoryRequirements.size, memoryTypeIndex};
  + MemoryImportParams params = {memoryRequirements.size,
  + static_cast<uint32_t>(memoryTypeIndex)};
  return params;
  }
  