Always use portable fonts in image filter test

Bug: skia:
Change-Id: I94defb54899bba4c2ef54bc970d5f35d12073788
Reviewed-on: https://skia-review.googlesource.com/155923
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/tests/ImageFilterTest.cpp b/tests/ImageFilterTest.cpp
index 0c2bf0a..0ae8d57 100644
--- a/tests/ImageFilterTest.cpp
+++ b/tests/ImageFilterTest.cpp
@@ -721,6 +721,7 @@
     const int tileSize = 8;
 
     SkPaint textPaint;
+    sk_tool_utils::set_portable_typeface(&textPaint);
     textPaint.setTextSize(SkIntToScalar(height));
     textPaint.setColor(SK_ColorWHITE);
 
@@ -730,6 +731,7 @@
     for (int scale = 1; scale <= 2; ++scale) {
         for (int i = 0; i < filters.count(); ++i) {
             SkPaint combinedPaint;
+            sk_tool_utils::set_portable_typeface(&combinedPaint);
             combinedPaint.setTextSize(SkIntToScalar(height));
             combinedPaint.setColor(SK_ColorWHITE);
             combinedPaint.setImageFilter(sk_ref_sp(filters.getFilter(i)));