Force impicit fallthrough off in xxhash.

This silences a warning present in Skia. The warning is disabled in ANGLE/Chrome by build's compiler.gni. Bug: skia:7647 Change-Id: Ie6308b7f4395786564aa79db8eb35401f3d98048 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2382414 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

Force impicit fallthrough off in xxhash.
5fde632c · Jamie Madill · Commit Bot · 331581e9 · 5fde632c
Commit 5fde632c authored Aug 28, 2020 by Jamie Madill Committed by Commit Bot Aug 29, 2020
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BUILD.gn BUILD.gn +3 -0

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--- a/BUILD.gn
+++ b/BUILD.gn
@@ -281,6 +281,9 @@ angle_source_set("angle_system_utils") {
 angle_source_set("xxhash") {
  sources = xxhash_sources
+  if (is_clang) {
+    cflags_c = [ "-Wno-implicit-fallthrough" ]
+  }
 }
 if (angle_has_build) {