Disable AVX2 for Skia in the SyzyAsan build of Chrome.

skia/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
+import("//build/config/sanitizers/sanitizers.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
 import("//third_party/skia/gn/shared_sources.gni")
 
 if (current_cpu == "arm") {
   import("//build/config/arm.gni")
 }
 if (current_cpu == "mipsel" || current_cpu == "mips64el") {
   import("//build/config/mips.gni")
 }
@@ skipping 540 matching lines @@
       }
       visibility = [ ":skia_opts" ]
       configs -= [ "//build/config/compiler:chromium_code" ]
       configs += [
         ":skia_config",
         ":skia_library_config",
         "//build/config/compiler:no_chromium_code",
       ]
     }
     source_set("skia_opts_hsw") {
-      sources = skia_opts.hsw_sources
+      # SyzyAsan doesn't support the AVX2 and F16C instructions.
+      if (!is_syzyasan) {
+        sources = skia_opts.hsw_sources
+      } else {
+        sources = [
+          "ext/SkOpts_hsw_stub.cc",
+        ]
+      }
       if (!is_win) {
         cflags = [
           "-mavx2",
           "-mbmi",
           "-mbmi2",
           "-mf16c",
           "-mfma",
         ]
       }
-      if (is_win) {
+      if (is_win && !is_syzyasan) {
         cflags = [ "/arch:AVX2" ]
       }
       visibility = [ ":skia_opts" ]
       configs -= [ "//build/config/compiler:chromium_code" ]
       configs += [
         ":skia_config",
         ":skia_library_config",
         "//build/config/compiler:no_chromium_code",
       ]
     }
@@ skipping 137 matching lines @@
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
 }