Revert of Rename kPMColor_SkColorType to kN32_SkColorType.

src/core/SkBitmapFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkErrorInternals.h"
 #include "SkConvolver.h"
 #include "SkBitmapProcState.h"
@@ skipping 106 matching lines @@
 bool SkBitmapProcState::setBitmapFilterProcs() {
     if (fFilterLevel != SkPaint::kHigh_FilterLevel) {
         return false;
     }
 
     if (fAlphaScale != 256) {
         return false;
     }
 
     // TODO: consider supporting other colortypes (e.g. 565, A8)
-    if (fBitmap->colorType() != kN32_SkColorType) {
+    if (fBitmap->colorType() != kPMColor_SkColorType) {
         return false;
     }
 
     // TODO: consider supporting repeat and mirror
     if (SkShader::kClamp_TileMode != fTileModeX || SkShader::kClamp_TileMode != fTileModeY) {
         return false;
     }
 
     // TODO: is this right?  do we want fBitmapFilter allocated even if we can't set shader procs?
     if (fInvType & (SkMatrix::kAffine_Mask | SkMatrix::kScale_Mask)) {
         fBitmapFilter = SkBitmapFilter::Allocate();
     }
 
     if (fInvType & SkMatrix::kScale_Mask) {
         fShaderProc32 = highQualityFilter32;
         fShaderProc16 = highQualityFilter16;
         return true;
     } else {
         return false;
     }
 }