Get our color channels straight. The reason why the color swap was required...

skia/config/SkUserConfig.h

 /*
  * Copyright (C) 2006 The Android Open Source Project
  *
  * 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
  *
  * Unless required by applicable law or agreed to in writing, software
@@ skipping 148 matching lines @@
 #undef SK_RESTRICT
 #define SK_RESTRICT
 
 // Skia uses this deprecated bzero function to fill zeros into a string.
 #define bzero(str, len) memset(str, 0, len)
 
 #elif defined(SK_BUILD_FOR_MAC)
 
 #define SK_CPU_LENDIAN
 #undef  SK_CPU_BENDIAN
-// we want (memory order) RGBA
+// we want (memory order) BGRA, because that's what core image uses with
+// kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host, which is what
+// Apple recommends for best performance (ARGB becomes BGRA in memory on
+// little-endian) -- and we want skia and coregraphic to have matching memory
+// layouts, so that we don't have to spend time converting between them.
 #define SK_A32_SHIFT    24
-#define SK_R32_SHIFT    0
+#define SK_R32_SHIFT    16
 #define SK_G32_SHIFT    8
-#define SK_B32_SHIFT    16
+#define SK_B32_SHIFT    0
 
 #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
@@ skipping 29 matching lines @@
   #undef SK_DEBUG
 //#endif
 
 // For now (and to avoid rebaselining 1700+ tests), we'll use the old version
 // of SkAlpha255To256.
 #define SK_USE_OLD_255_TO_256
 
 // ===== End Chrome-specific definitions =====
 
 #endif