text size is an SkScalar, Windows reminds me.

gm/imageblur.cpp

Index: gm/imageblur.cpp
diff --git a/gm/imageblur.cpp b/gm/imageblur.cpp
index 2b2b73fa2bb192edabdc99d1cfc2a83a573d447c..0e506534c381eaf79a9992f59e5e4c96e19e08b9 100644
--- a/gm/imageblur.cpp
+++ b/gm/imageblur.cpp
@@ -42,7 +42,7 @@ protected:
             int x = rand.nextULessThan(WIDTH);
             int y = rand.nextULessThan(HEIGHT);
             textPaint.setColor(rand.nextBits(24) | 0xFF000000);
-            textPaint.setTextSize(rand.nextULessThan(300));
+            textPaint.setTextSize(rand.nextRangeScalar(0, 300));
             canvas->drawText(str, strlen(str), SkIntToScalar(x),
                              SkIntToScalar(y), textPaint);
         }