Add feature flag for WebAssembly SIMD

Bug: v8:6020
Change-Id: Ie9b3f45d50a6362cdf64ee573c50241b1295d1d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1588525
Reviewed-by: Adam Klein <[email protected]>
Reviewed-by: Jochen Eisinger <[email protected]>
Commit-Queue: Deepti Gandluri <[email protected]>
Cr-Commit-Position: refs/heads/master@{#656088}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 050b71e..82bdd4b 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -572,6 +572,9 @@
 extern const char kEnableWasmCodeCacheName[];
 extern const char kEnableWasmCodeCacheDescription[];
 
+extern const char kEnableWasmSimdName[];
+extern const char kEnableWasmSimdDescription[];
+
 extern const char kEnableWasmThreadsName[];
 extern const char kEnableWasmThreadsDescription[];