Move 'mustRegenerate' function into GrAtlasTextBlob

src/gpu/GrAtlasTextBlob.h

Index: src/gpu/GrAtlasTextBlob.h
diff --git a/src/gpu/GrAtlasTextBlob.h b/src/gpu/GrAtlasTextBlob.h
index a4007829773b801e91e9a2c59c4e7c1cbe4d824e..3ec3c44999947a84538f92753b547d2137fd1394 100644
--- a/src/gpu/GrAtlasTextBlob.h
+++ b/src/gpu/GrAtlasTextBlob.h
@@ -300,6 +300,10 @@ struct GrAtlasTextBlob : public SkNVRefCnt<GrAtlasTextBlob> {
         }
     }
 
+    bool mustRegenerate(SkScalar* outTransX, SkScalar* outTransY, const SkPaint& paint,
+                        GrColor color, const SkMaskFilter::BlurRec& blurRec,
+                        const SkMatrix& viewMatrix, SkScalar x, SkScalar y);
+
     // position + local coord
     static const size_t kColorTextVASize = sizeof(SkPoint) + sizeof(SkIPoint16);
     static const size_t kGrayTextVASize = sizeof(SkPoint) + sizeof(GrColor) + sizeof(SkIPoint16);