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-rw-r--r--ui/snapshot/snapshot_export.h32
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diff --git a/ui/snapshot/snapshot_export.h b/ui/snapshot/snapshot_export.h
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+// Copyright (c) 2012 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_SNAPSHOT_SNAPSHOT_EXPORT_H
+#define UI_SNAPSHOT_SNAPSHOT_EXPORT_H
+
+// Defines SNAPSHOT_EXPORT so that functionality implemented by the snapshot
+// module can be exported to consumers.
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(SNAPSHOT_IMPLEMENTATION)
+#define SNAPSHOT_EXPORT __declspec(dllexport)
+#else
+#define SNAPSHOT_EXPORT __declspec(dllimport)
+#endif // defined(SNAPSHOT_IMPLEMENTATION)
+
+#else // defined(WIN32)
+#if defined(SNAPSHOT_IMPLEMENTATION)
+#define SNAPSHOT_EXPORT __attribute__((visibility("default")))
+#else
+#define SNAPSHOT_EXPORT
+#endif
+#endif
+
+#else // defined(COMPONENT_BUILD)
+#define SNAPSHOT_EXPORT
+#endif
+
+#endif // UI_SNAPSHOT_SNAPSHOT_EXPORT_H