Always make SkImageShaders in heap.

I made a couple of measurments, and it looks like any differences is
well below the noise threshold.

Just for the record run1: .9991 of baseline and run2 .9988 of baseline.
I was using top25 .skps as workload.

TBR=mtklein@google.com

Change-Id: If4fa06e5d5df72fb67dbb4bbb99c926f05765897
Reviewed-on: https://skia-review.googlesource.com/8341
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/xps/SkXPSDevice.cpp b/src/xps/SkXPSDevice.cpp
index 8dca7f0156..f32ca86d92 100644
--- a/src/xps/SkXPSDevice.cpp
+++ b/src/xps/SkXPSDevice.cpp
@@ -2274,7 +2274,7 @@ void SkXPSDevice::drawBitmapRect(const SkDraw& draw,
 
     auto bitmapShader = SkMakeBitmapShader(bitmap, SkShader::kClamp_TileMode,
                                            SkShader::kClamp_TileMode, &matrix,
-                                           kNever_SkCopyPixelsMode, nullptr);
+                                           kNever_SkCopyPixelsMode);
     SkASSERT(bitmapShader);
     if (!bitmapShader) { return; }
     SkPaint paintWithShader(paint);