Re-enable spirv-cross fuzzers

Roll third_party/shaderc/ 24536bdd3..1d6155d86 (1 commit)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/24536bdd3cff..1d6155d8679a

$ git log 24536bdd3..1d6155d86 --date=short --no-merges --format='%ad %ae %s'
2019-11-27 rharrison Moving spirv-cross dep from Dawn into shaderc (#911)

Created with:
  roll-dep third_party/shaderc

BUG=dawn:285

Change-Id: I47d202166f9e34c88e7aad75d6a3c8aa9a7d6499
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14120
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 26cdf68..68e63d1 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1210,6 +1210,9 @@
 group("dawn_fuzzers") {
   testonly = true
   deps = [
+    "src/fuzzers:dawn_spirv_cross_glsl_fast_fuzzer",
+    "src/fuzzers:dawn_spirv_cross_hlsl_fast_fuzzer",
+    "src/fuzzers:dawn_spirv_cross_msl_fast_fuzzer",
     "src/fuzzers:dawn_wire_server_and_frontend_fuzzer",
   ]
 }