Separate gfx_ipc into skia-dependent and non-skia-dependent parts

ui/gfx/ipc/skia/gfx_skia_ipc_export.h

Index: ui/gfx/ipc/skia/gfx_skia_ipc_export.h
diff --git a/ui/gfx/ipc/skia/gfx_skia_ipc_export.h b/ui/gfx/ipc/skia/gfx_skia_ipc_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc29fb945d6f00d5cd1f2b4cc96fa9e78d14ad39
--- /dev/null
+++ b/ui/gfx/ipc/skia/gfx_skia_ipc_export.h
@@ -0,0 +1,29 @@
+// 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 UI_GFX_IPC_GFX_SKIA_IPC_EXPORT_H_
+#define UI_GFX_IPC_GFX_SKIA_IPC_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(GFX_SKIA_IPC_IMPLEMENTATION)
+#define GFX_SKIA_IPC_EXPORT __declspec(dllexport)
+#else
+#define GFX_SKIA_IPC_EXPORT __declspec(dllimport)
+#endif  // defined(GFX_SKIA_IPC_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(GFX_SKIA_IPC_IMPLEMENTATION)
+#define GFX_SKIA_IPC_EXPORT __attribute__((visibility("default")))
+#else
+#define GFX_SKIA_IPC_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define GFX_SKIA_IPC_EXPORT
+#endif
+
+#endif  // UI_GFX_IPC_GFX_SKIA_IPC_EXPORT_H_