Force cache SkTestScalerContext path bounds.

src/fonts/SkTestScalerContext.cpp

Index: src/fonts/SkTestScalerContext.cpp
diff --git a/src/fonts/SkTestScalerContext.cpp b/src/fonts/SkTestScalerContext.cpp
index 368f26983cc4f7454de739af00313c6e19e1de94..7afe6521a3ab3220779591f64d4756d1280feb78 100644
--- a/src/fonts/SkTestScalerContext.cpp
+++ b/src/fonts/SkTestScalerContext.cpp
@@ -108,6 +108,8 @@ void SkTestFont::init(const SkScalar* pts, const unsigned char* verbs) {
                     return;
             }
         }
+        // This should make SkPath::getBounds() queries threadsafe.
+        path->updateBoundsCache();
         fPaths[index] = path;
     }
 }