Add fuzzer infra to blink and fuzz CSS parser

third_party/WebKit/Source/platform/testing/BlinkFuzzerTestSupport.cpp

+// Copyright 2016 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.
+
+#include "platform/testing/BlinkFuzzerTestSupport.h"
+
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "platform/weborigin/SchemeRegistry.h"
+#include <content/test/blink_test_environment.h>
+
+namespace blink {
+
+void InitializeBlinkFuzzTest(int* argc, char ***argv)
+{
+    // Note: we don't tear anything down here after an iteration of the fuzzer
+    // is complete, this is for efficiency. We rerun the fuzzer with the same
+    // environment as the previous iteration.
+    base::AtExitManager atExit;
+
+    mojo::edk::Init();
+    base::CommandLine::Init(*argc, *argv);
+
+    content::SetUpBlinkTestEnvironment();
+
+    blink::SchemeRegistry::initialize();
+}
+
+} // namespace blink