MacViews: Move content::AcceleratedWidget to new component, ui/accelerated_widget_mac

ui/accelerated_widget_mac/accelerated_widget_mac_export.h

Index: ui/accelerated_widget_mac/accelerated_widget_mac_export.h
diff --git a/ui/accelerated_widget_mac/accelerated_widget_mac_export.h b/ui/accelerated_widget_mac/accelerated_widget_mac_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..e16df3dd04d2f2a2dc2582006b5c59d6f2be4167
--- /dev/null
+++ b/ui/accelerated_widget_mac/accelerated_widget_mac_export.h
@@ -0,0 +1,24 @@
+// 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.
+
+#ifndef UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_EXPORT_H_
+#define UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_EXPORT_H_
+
+#if defined(WIN32)
+#error Not for use on Windows.
+#endif
+
+#if defined(COMPONENT_BUILD)
+
+#if defined(ACCELERATED_WIDGET_MAC_IMPLEMENTATION)
+#define ACCELERATED_WIDGET_MAC_EXPORT __attribute__((visibility("default")))
+#else
+#define ACCELERATED_WIDGET_MAC_EXPORT
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define ACCELERATED_WIDGET_MAC_EXPORT
+#endif
+
+#endif  // UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_EXPORT_H_