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

chrome/browser/cocoa/cocoa_utils.mm

 // Copyright (c) 2009 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.
 
 #include <base/logging.h>
 #include "chrome/browser/cocoa/cocoa_utils.h"
 #import <QuartzCore/CIImage.h>
 #include "third_party/skia/include/utils/mac/SkCGUtils.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 
 namespace {
 
 // Callback passed to CGDataProviderCreateWithData()
 void ReleaseData(void* info, const void* pixelData, size_t size) {
   // info is a non-const pixelData
   if (info)
     free(info);
 }
 
 }
 
 namespace CocoaUtils {
 
-NSImage* SkBitmapToNSImage(const SkBitmap& icon) {
+NSImage* SkBitmapToNSImage(const SkBitmap& skiaBitmap) {
   // First convert SkBitmap to CGImageRef.
-  CGImageRef cgimage;
-  if (icon.config() != SkBitmap::kARGB_8888_Config) {
-    cgimage = SkCreateCGImageRef(icon);
-  } else {
-    // The above code returns a valid NSImage even in the
-    // kARGB_8888_Config case.  As an example, the unit test which
-    // draws a blue SkBitmap can lockPixels, NSReadPixel, and pull out
-    // a single pixel from the NSImage and see it blue.  However, the
-    // NSImage returned will be in ABGR format.  Although Cocoa is
-    // otherwise happy with that format (as seen in simple tests
-    // outside Chromium), Chromium is NOT happy.  In Chromium, B and R
-    // are swapped.
-    //
-    // As a hint, CIImage supports a few formats, such as ARGB.
-    // Interestingly, it does NOT support ABGR.  I speculate there is
-    // some way we set up our drawing context which has the format
-    // specified wrong (in skia/ext/bitmap_platform_device_mac.cc),
-    // but I have not been able to solve this yet.
-    //
-    // TODO(jrg): track down the disconnect.
-    // TODO(jrg): Remove byte conversion.
-    // TODO(jrg): Fix unit tests to NOT swap bytes.
-    // http://crbug.com/14020
-    CGBitmapInfo info = (kCGImageAlphaPremultipliedFirst |
-                         kCGBitmapByteOrder32Host);
-    int width = icon.width();
-    int height = icon.height();
-    int rowbytes = icon.rowBytes();
-    int rowwords = rowbytes/4;
-    unsigned length = rowbytes * height;
-    DCHECK(length > 0);
-    uint32_t* rawptr = static_cast<uint32_t*>(malloc(length));
-    DCHECK(rawptr);
-    if (!rawptr || !length)
-      return nil;
-
-    // Convert ABGR to ARGB
-    icon.lockPixels();
-    uint32_t* rawbitmap = static_cast<uint32_t*>(icon.getPixels());
-    uint32_t rawbit;
-    int offset;
-    for (int y = 0; y < height; y++) {
-      for (int x = 0; x < width; x++) {
-        offset = x + y*rowwords;
-        rawbit = rawbitmap[offset];
-        rawptr[offset] = SkPackARGB32(SkGetPackedA32(rawbit),
-                                      SkGetPackedR32(rawbit),
-                                      SkGetPackedG32(rawbit),
-                                      SkGetPackedB32(rawbit));
-      }
-    }
-    icon.unlockPixels();
-
-    CGDataProviderRef dataRef =
-      CGDataProviderCreateWithData(rawptr, rawptr, length, ReleaseData);
-    CGColorSpaceRef space = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
-    cgimage = CGImageCreate(width, height, 8,
-                            icon.bytesPerPixel() * 8,
-                            rowbytes, space, info, dataRef,
-                            NULL, false, kCGRenderingIntentDefault);
-    CGColorSpaceRelease(space);
-    CGDataProviderRelease(dataRef);
-  }
+  CGImageRef cgimage = SkCreateCGImageRef(skiaBitmap);
 
   // Now convert to NSImage.
   NSBitmapImageRep* bitmap = [[[NSBitmapImageRep alloc]
                                    initWithCGImage:cgimage] autorelease];
   CFRelease(cgimage);
   NSImage* image = [[[NSImage alloc] init] autorelease];
   [image addRepresentation:bitmap];
   return image;
 }
 
 }  // namespace CocoaUtils