change SkDraw and all Blitters to use pixmap instead of bitmap

src/core/SkBlitMask.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBlitMask_DEFINED
 #define SkBlitMask_DEFINED
 
-#include "SkBitmap.h"
 #include "SkColor.h"
 #include "SkMask.h"
+#include "SkPixmap.h"
 
 class SkBlitMask {
 public:
     /**
      *  Returns true if the device config and mask format were supported.
      *  else return false (nothing was drawn)
      */
-    static bool BlitColor(const SkBitmap& device, const SkMask& mask,
+    static bool BlitColor(const SkPixmap& device, const SkMask& mask,
                           const SkIRect& clip, SkColor color);
 
     /**
      *  Function pointer that blits the mask into a device (dst) colorized
      *  by color. The number of pixels to blit is specified by width and height,
      *  but each scanline is offset by dstRB (rowbytes) and srcRB respectively.
      */
     typedef void (*ColorProc)(void* dst, size_t dstRB,
                               const void* mask, size_t maskRB,
                               SkColor color, int width, int height);
@@ skipping 49 matching lines @@
     static RowProc RowFactory(SkColorType, SkMask::Format, RowFlags);
 
     /**
      *  Return either platform specific optimized blitmask RowProc,
      *  or NULL if no optimized routine is available.
      */
     static RowProc PlatformRowProcs(SkColorType, SkMask::Format, RowFlags);
 };
 
 #endif