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diff --git a/gfx/thebes/gfxTypes.h b/gfx/thebes/gfxTypes.h
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_TYPES_H
+#define GFX_TYPES_H
+
+#include <stdint.h>
+
+typedef struct _cairo_surface cairo_surface_t;
+typedef struct _cairo_user_data_key cairo_user_data_key_t;
+
+typedef void (*thebes_destroy_func_t) (void *data);
+
+/**
+ * Currently needs to be 'double' for Cairo compatibility. Could
+ * become 'float', perhaps, in some configurations.
+ */
+typedef double gfxFloat;
+
+/**
+ * Priority of a line break opportunity.
+ *
+ * eNoBreak       The line has no break opportunities
+ * eWordWrapBreak The line has a break opportunity only within a word. With
+ *                overflow-wrap|word-wrap: break-word we will break at this point only if
+ *                there are no other break opportunities in the line.
+ * eNormalBreak   The line has a break opportunity determined by the standard
+ *                line-breaking algorithm.
+ *
+ * Future expansion: split eNormalBreak into multiple priorities, e.g.
+ *                    punctuation break and whitespace break (bug 389710).
+ *                   As and when we implement it, text-wrap: unrestricted will
+ *                    mean that priorities are ignored and all line-break
+ *                    opportunities are equal.
+ *
+ * @see gfxTextRun::BreakAndMeasureText
+ * @see nsLineLayout::NotifyOptionalBreakPosition
+ */
+enum class gfxBreakPriority {
+  eNoBreak       = 0,
+  eWordWrapBreak,
+  eNormalBreak
+};
+
+enum class gfxSurfaceType {
+  Image,
+  PDF,
+  PS,
+  Xlib,
+  Xcb,
+  Glitz,           // unused, but needed for cairo parity
+  Quartz,
+  Win32,
+  BeOS,
+  DirectFB,        // unused, but needed for cairo parity
+  SVG,
+  OS2,
+  Win32Printing,
+  QuartzImage,
+  Script,
+  QPainter,
+  Recording,
+  VG,
+  GL,
+  DRM,
+  Tee,
+  XML,
+  Skia,
+  Subsurface,
+  Max
+};
+
+enum class gfxContentType {
+  COLOR       = 0x1000,
+  ALPHA       = 0x2000,
+  COLOR_ALPHA = 0x3000,
+  SENTINEL    = 0xffff
+};
+
+#endif /* GFX_TYPES_H */