Add fuzzer infra to blink and fuzz CSS parser

third_party/WebKit/Source/core/BUILD.gn

 # Copyright 2014 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/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
@@ skipping 1406 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":core",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }
+
+# Fuzzer for blink::StyleSheetContents
+fuzzer_test("stylesheet_contents_fuzzer") {
+  sources = [
+    "css/StyleSheetContentsFuzzer.cpp",
+  ]
+  deps = [
+    ":core",
+    "../platform:blink_fuzzer_test_support",
+  ]
+  seed_corpus = "//third_party/WebKit/LayoutTests/fast/css/resources"
+  libfuzzer_options = [ "max_len=2048" ]
+}