MacViews: Use Cocoa folder icons in tree views.

ui/gfx/skbitmap_operations.cc

Index: ui/gfx/skbitmap_operations.cc
diff --git a/ui/gfx/skbitmap_operations.cc b/ui/gfx/skbitmap_operations.cc
index 3865916c9032e0b18d062a962e6582cec007f3e1..31b5eaa357ccaf7290a479c62c923a96b83fe4da 100644
--- a/ui/gfx/skbitmap_operations.cc
+++ b/ui/gfx/skbitmap_operations.cc
@@ -694,6 +694,26 @@ SkBitmap SkBitmapOperations::CreateTransposedBitmap(const SkBitmap& image) {
 }
 
 // static
+SkBitmap SkBitmapOperations::CreateMirroredBitmap(const SkBitmap& image) {
+  DCHECK(image.colorType() == kN32_SkColorType);
+
+  SkBitmap mirrored;
+  mirrored.allocN32Pixels(image.width(), image.height());
+
+  SkAutoLockPixels lock_image(image);
+  SkAutoLockPixels lock_mirrored(mirrored);
+
+  for (int y = 0; y < image.height(); ++y) {
+    uint32_t* image_row_src = image.getAddr32(0, y);
+    uint32_t* image_row_dst = mirrored.getAddr32(0, y);
+    for (int src_x = image.width() - 1, dst_x = 0; src_x >= 0; --src_x, ++dst_x)
+      image_row_dst[dst_x] = image_row_src[src_x];
+  }
+
+  return mirrored;
+}
+
+// static
 SkBitmap SkBitmapOperations::CreateColorMask(const SkBitmap& bitmap,
                                              SkColor c) {
   DCHECK(bitmap.colorType() == kN32_SkColorType);