Extract webkit_unit_tests from blink_web component.

third_party/WebKit/Source/web/WebExport.h

Index: third_party/WebKit/Source/web/WebExport.h
diff --git a/third_party/WebKit/Source/web/WebExport.h b/third_party/WebKit/Source/web/WebExport.h
new file mode 100644
index 0000000000000000000000000000000000000000..d9109cc69e21d2a2842b48026e1c99412e8b829f
--- /dev/null
+++ b/third_party/WebKit/Source/web/WebExport.h
@@ -0,0 +1,31 @@
+// 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.
+
+#ifndef WebExport_h
+#define WebExport_h
+
+#include "wtf/Compiler.h"
+
+namespace blink {
+
+// This macro is intended to export symbols in Source/web/ which are still
+// private to Blink (for instance, because they are used in unit tests).
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+#if BLINK_WEB_IMPLEMENTATION
+#define WEB_EXPORT __declspec(dllexport)
+#else
+#define WEB_EXPORT __declspec(dllimport)
+#endif // BLINK_WEB_IMPLEMENTATION
+#else // defined(WIN32)
+#define WEB_EXPORT __attribute__((visibility("default")))
+#endif
+#else // defined(COMPONENT_BUILD)
+#define WEB_EXPORT
+#endif
+
+} // namespace blink
+
+#endif // WebExport_h