Moves some files into mojo/common

mojo/common/mojo_common_export.h

Index: mojo/common/mojo_common_export.h
diff --git a/mojo/common/mojo_common_export.h b/mojo/common/mojo_common_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..bc2bbb16da14ccac15ff5763d7796bea2c2491f0
--- /dev/null
+++ b/mojo/common/mojo_common_export.h
@@ -0,0 +1,29 @@
+// Copyright (c) 2013 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 MOJO_COMMON_MOJO_COMMON_EXPORT_H_
+#define MOJO_COMMON_MOJO_COMMON_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(MOJO_COMMON_IMPLEMENTATION)
+#define MOJO_COMMON_EXPORT __declspec(dllexport)
+#else
+#define MOJO_COMMON_EXPORT __declspec(dllimport)
+#endif  // defined(MOJO_COMMON_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(MOJO_COMMON_IMPLEMENTATION)
+#define MOJO_COMMON_EXPORT __attribute__((visibility("default")))
+#else
+#define MOJO_COMMON_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define MOJO_COMMON_EXPORT
+#endif
+
+#endif  // MOJO_COMMON_MOJO_COMMON_EXPORT_H_