Revert of Rename kPMColor_SkColorType to kN32_SkColorType.

src/effects/SkBicubicImageFilter.cpp

 /*
  * Copyright 2013 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBicubicImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 73 matching lines @@
                                          const SkBitmap& source,
                                          const Context& ctx,
                                          SkBitmap* result,
                                          SkIPoint* offset) const {
     SkBitmap src = source;
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
     if (getInput(0) && !getInput(0)->filterImage(proxy, source, ctx, &src, &srcOffset)) {
         return false;
     }
 
-    if (src.colorType() != kN32_SkColorType) {
+    if (src.colorType() != kPMColor_SkColorType) {
         return false;
     }
 
     SkAutoLockPixels alp(src);
     if (!src.getPixels()) {
         return false;
     }
 
     SkRect dstRect = SkRect::MakeWH(SkScalarMul(SkIntToScalar(src.width()), fScale.fWidth),
                                     SkScalarMul(SkIntToScalar(src.height()), fScale.fHeight));
@@ skipping 91 matching lines @@
     paint.addColorEffect(GrBicubicEffect::Create(srcTexture, fCoefficients))->unref();
     SkRect srcRect;
     srcBM.getBounds(&srcRect);
     context->drawRectToRect(paint, dstRect, srcRect);
     WrapTexture(dst, desc.fWidth, desc.fHeight, result);
     return true;
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////