Switch from using GdkPixbuf to cairo for painting on Drawables.

skia/include/corecg/SkUserConfig.h

 /* include/corecg/SkUserConfig.h
 **
 ** Copyright 2006, Google Inc.
 **
 ** Licensed under the Apache License, Version 2.0 (the "License"); 
 ** you may not use this file except in compliance with the License. 
 ** You may obtain a copy of the License at 
 **
 **     http://www.apache.org/licenses/LICENSE-2.0 
 **
@@ skipping 98 matching lines @@
 #elif defined(SK_BUILD_FOR_MAC)
 
 #define SK_CPU_LENDIAN
 #undef  SK_CPU_BENDIAN
 // we want (memory order) RGBA
 #define SK_A32_SHIFT    24
 #define SK_R32_SHIFT    0
 #define SK_G32_SHIFT    8
 #define SK_B32_SHIFT    16
 
+#elif defined(SK_BUILD_FOR_UNIX)
+
+#ifdef SK_CPU_BENDIAN
+// Below we set the order for ARGB channels in registers. I suspect that, on
+// big endian machines, you can keep this the same and everything will work.
+// The in-memory order will be different, of course, but as long as everything
+// is reading memory as words rather than bytes, it will all work. However, if
+// you find that colours are messed up I thought that I would leave a helpful
+// locator for you. Also see the comments in
+// base/gfx/bitmap_platform_device_linux.h
+#error Read the comment at this location
+#endif
+
+// For Linux we want to match the most common X visual, which is
+// ARGB (in registers)
+#define SK_A32_SHIFT 24
+#define SK_R32_SHIFT 16
+#define SK_G32_SHIFT 8
+#define SK_B32_SHIFT 0
+
 #endif
 
 // Don't use skia debug mode even when compiled as debug, because we don't
 // care about debugging this library, only our app.
 #undef SK_DEBUG
 #undef SK_SUPPORT_UNITTEST
 #define SK_RELEASE
 #undef SK_RESTRICT
 #define SK_RESTRICT
 #define SkDebugf(...)  ((void)0)
 
 // ===== End Chrome-specific definitions =====
 
 #endif