Add a src rect to drawImageLattice() API

src/core/SkPicturePlayback.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkPatchUtils.h"
 #include "SkPictureData.h"
@@ skipping 304 matching lines @@
             const SkPaint* paint = fPictureData->getPaint(reader);
             const SkImage* image = fPictureData->getImage(reader);
             SkCanvas::Lattice lattice;
             lattice.fXCount = reader->readInt();
             lattice.fXDivs = (const int*) reader->skip(lattice.fXCount * sizeof(int32_t));
             lattice.fYCount = reader->readInt();
             lattice.fYDivs = (const int*) reader->skip(lattice.fYCount * sizeof(int32_t));
             int flagCount = reader->readInt();
             lattice.fFlags = (0 == flagCount) ? nullptr : (const SkCanvas::Lattice::Flags*)
                     reader->skip(SkAlign4(flagCount * sizeof(SkCanvas::Lattice::Flags)));
+            SkIRect src;
+            reader->readIRect(&src);
+            lattice.fBounds = &src;
             SkRect dst;
             reader->readRect(&dst);
             canvas->drawImageLattice(image, lattice, dst, paint);
         } break;
         case DRAW_IMAGE_NINE: {
             const SkPaint* paint = fPictureData->getPaint(reader);
             const SkImage* image = fPictureData->getImage(reader);
             SkIRect center;
             reader->readIRect(&center);
             SkRect dst;
@@ skipping 330 matching lines @@
         case TRANSLATE_Z: {
 #ifdef SK_EXPERIMENTAL_SHADOWING
             SkScalar dz = reader->readScalar();
             canvas->translateZ(dz);
 #endif
         } break;
         default:
             SkASSERTF(false, "Unknown draw type: %d", op);
     }
 }