Crop the fast path dashed lines to the cull rect

src/core/SkDraw.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDraw.h"
 #include "SkBlitter.h"
 #include "SkCanvas.h"
@@ skipping 442 matching lines @@
     SkScalar width = paint.getStrokeWidth();
     if (0 == width) {
         fMode = mode;
         fPaint = &paint;
         fClip = NULL;
         fRC = rc;
         fRadius = SK_FixedHalf;
         return true;
     }
     if (paint.getStrokeCap() != SkPaint::kRound_Cap &&
-            matrix->rectStaysRect() && SkCanvas::kPoints_PointMode == mode) {
+        matrix->isScaleTranslate() && SkCanvas::kPoints_PointMode == mode) {
         SkScalar sx = matrix->get(SkMatrix::kMScaleX);
         SkScalar sy = matrix->get(SkMatrix::kMScaleY);
         if (SkScalarNearlyZero(sx - sy)) {
             if (sx < 0) {
                 sx = -sx;
             }
 
             fMode = mode;
             fPaint = &paint;
             fClip = NULL;
@@ skipping 1904 matching lines @@
         mask->fImage = SkMask::AllocImage(size);
         memset(mask->fImage, 0, mask->computeImageSize());
     }
 
     if (SkMask::kJustComputeBounds_CreateMode != mode) {
         draw_into_mask(*mask, devPath, style);
     }
 
     return true;
 }