Hide fields in SkImageInfo

tests/BlitRowTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 194 matching lines @@
     SkRect srcR = {
         0, 0, SkIntToScalar(srcBM.width()), SkIntToScalar(srcBM.height()) };
 
     // cons up a mesh to draw the bitmap with
     Mesh mesh(srcBM, &paint);
 
     SkImageInfo info = SkImageInfo::Make(W, H, kUnknown_SkColorType,
                                          kPremul_SkAlphaType);
 
     for (size_t i = 0; i < SK_ARRAY_COUNT(gDstColorType); i++) {
-        info.fColorType = gDstColorType[i];
+        info = info.makeColorType(gDstColorType[i]);
 
         SkBitmap dstBM0, dstBM1;
         dstBM0.allocPixels(info);
         dstBM1.allocPixels(info);
 
         SkCanvas canvas0(dstBM0);
         SkCanvas canvas1(dstBM1);
         SkColor bgColor;
 
         for (size_t j = 0; j < SK_ARRAY_COUNT(gDstBG); j++) {
@@ skipping 29 matching lines @@
                 }
             }
         }
     }
 }
 
 DEF_TEST(BlitRow, reporter) {
     test_00_FF(reporter);
     test_diagonal(reporter);
 }