Allow Resize to be called w/ a preallocated pixmap

src/core/SkBitmapScaler.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBitmapScaler_DEFINED
 #define SkBitmapScaler_DEFINED
 
@@ skipping 11 matching lines @@
         RESIZE_BOX,
         RESIZE_TRIANGLE,
         RESIZE_LANCZOS3,
         RESIZE_HAMMING,
         RESIZE_MITCHELL,
 
         RESIZE_FirstMethod = RESIZE_BOX,
         RESIZE_LastMethod = RESIZE_MITCHELL,
     };
 
+    static bool Resize(const SkPixmap& dst, const SkPixmap& src, ResizeMethod method);

[caryclark, 2016/01/13 20:22:53]

At a casual glance, I would expect that this does not alter dst since it is
const.

[robertphillips, 2016/01/13 20:41:38]

I agree - it seems odd.

+
     static bool Resize(SkBitmap* result, const SkPixmap& src, ResizeMethod method,
                        int dest_width, int dest_height, SkBitmap::Allocator* = nullptr);
 
      /** Platforms can also optionally overwrite the convolution functions
         if we have SIMD versions of them.
       */
 
     static void PlatformConvolutionProcs(SkConvolutionProcs*);
 };
 
 #endif