Add drawBitmapLattice() API

tests/PictureTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBigPicture.h"
 #include "SkBBoxHierarchy.h"
 #include "SkBlurImageFilter.h"
@@ skipping 976 matching lines @@
     test_clip_expansion(reporter);
     test_hierarchical(reporter);
     test_gen_id(reporter);
     test_cull_rect_reset(reporter);
 }
 
 static void draw_bitmaps(const SkBitmap bitmap, SkCanvas* canvas) {
     const SkPaint paint;
     const SkRect rect = { 5.0f, 5.0f, 8.0f, 8.0f };
     const SkIRect irect =  { 2, 2, 3, 3 };
+    int divs[] = { 2, 3 };
+    SkCanvas::Lattice lattice;
+    lattice.fXCount = lattice.fYCount = 2;
+    lattice.fXDivs = lattice.fYDivs = divs;
 
     // Don't care what these record, as long as they're legal.
     canvas->drawBitmap(bitmap, 0.0f, 0.0f, &paint);
     canvas->drawBitmapRect(bitmap, rect, rect, &paint, SkCanvas::kStrict_SrcRectConstraint);
     canvas->drawBitmapNine(bitmap, irect, rect, &paint);
     canvas->drawBitmap(bitmap, 1, 1);   // drawSprite
+    canvas->drawBitmapLattice(bitmap, lattice, rect, &paint);
 }
 
 static void test_draw_bitmaps(SkCanvas* canvas) {
     SkBitmap empty;
     draw_bitmaps(empty, canvas);
     empty.setInfo(SkImageInfo::MakeN32Premul(10, 10));
     draw_bitmaps(empty, canvas);
 }
 
 DEF_TEST(Picture_EmptyBitmap, r) {
@@ skipping 287 matching lines @@
             SkPictureRecorder rec;
             proc(rec.beginRecording(cull));
             sk_sp<SkDrawable> dr = rec.finishRecordingAsDrawable(
                                                  SkPictureRecorder::kReturnNullForEmpty_FinishFlag);
             REPORTER_ASSERT(r, !dr.get());
         }
     }
 }
 #endif