Refactor bitmap scaler to make it easier to migrate rest of chrome to use it

src/core/SkBitmapProcState.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 "SkBitmapProcState.h"
 #include "SkColorPriv.h"
 #include "SkFilterProc.h"
@@ skipping 154 matching lines @@
                 // fall through to rebuild
             }
         }
 
         if (NULL == fScaledCacheID) {
             float dest_width  = fOrigBitmap.width() / invScaleX;
             float dest_height = fOrigBitmap.height() / invScaleY;
 
             // All the criteria are met; let's make a new bitmap.
 
-            SkConvolutionProcs simd;
-            sk_bzero(&simd, sizeof(simd));
-            this->platformConvolutionProcs(&simd);
-
             if (!SkBitmapScaler::Resize(&fScaledBitmap,
                                         fOrigBitmap,
                                         SkBitmapScaler::RESIZE_BEST,
                                         dest_width,
                                         dest_height,
-                                        simd,
                                         SkScaledImageCache::GetAllocator())) {
                 // we failed to create fScaledBitmap, so just return and let
                 // the scanline proc handle it.
                 return false;
 
             }
 
             SkASSERT(NULL != fScaledBitmap.getPixels());
             fScaledCacheID = SkScaledImageCache::AddAndLock(fOrigBitmap,
                                                             invScaleX,
@@ skipping 839 matching lines @@
     } else {
         size >>= 2;
     }
 
     if (fFilterLevel != SkPaint::kNone_FilterLevel) {
         size >>= 1;
     }
 
     return size;
 }