Revert of Rename kPMColor_SkColorType to kN32_SkColorType.

tools/skimage_main.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 "gm_expectations.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 146 matching lines @@
         filename = SkOSPath::SkPathJoin(imageDir.c_str(), checksumBasedName.c_str());
     } else {
         make_outname(&filename, outDir, src, ".png");
     }
 
     const SkBitmap& bm = bitmapAndDigest.fBitmap;
     if (SkImageEncoder::EncodeFile(filename.c_str(), bm, SkImageEncoder::kPNG_Type, 100)) {
         return true;
     }
 
-    if (bm.colorType() == kN32_SkColorType) {
+    if (bm.colorType() == kPMColor_SkColorType) {
         // First attempt at encoding failed, and the bitmap was already 8888. Making
         // a copy is not going to help.
         return false;
     }
 
     // Encoding failed. Copy to 8888 and try again.
     SkBitmap bm8888;
-    if (!bm.copyTo(&bm8888, kN32_SkColorType)) {
+    if (!bm.copyTo(&bm8888, kPMColor_SkColorType)) {
         return false;
     }
     return SkImageEncoder::EncodeFile(filename.c_str(), bm8888, SkImageEncoder::kPNG_Type, 100);
 }
 
 /**
  *  Return a random SkIRect inside the range specified.
  *  @param rand Random number generator.
  *  @param maxX Exclusive maximum x-coordinate. SkIRect's fLeft and fRight will be
  *      in the range [0, maxX)
@@ skipping 645 matching lines @@
     print_strings("Known failures", gKnownFailures);
 
     return failed ? -1 : 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif