Helper for checking if an SVGTextFragment is transformed

third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h

Index: third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h
diff --git a/third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h b/third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h
index 778a94ba4719c4fa15be5b8596515e86ead8f244..d03e43b242f85fd2f5aadace4405bb6cf458242a 100644
--- a/third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h
+++ b/third_party/WebKit/Source/core/layout/svg/SVGTextFragment.h
@@ -59,6 +59,8 @@ struct SVGTextFragment {
             buildTransformForTextOnLine(result);
     }
 
+    bool isTransformed() const { return affectedByTextLength() || !transform.isIdentity(); }
+
     // The first laid out character starts at LayoutSVGInlineText::characters() + characterOffset.
     unsigned characterOffset;
     unsigned metricsListOffset;
@@ -85,6 +87,8 @@ struct SVGTextFragment {
     AffineTransform lengthAdjustTransform;
 
 private:
+    bool affectedByTextLength() const { return lengthAdjustTransform.a() != 1 || lengthAdjustTransform.d() != 1; }
+
     void transformAroundOrigin(AffineTransform& result) const
     {
         // Returns (translate(x, y) * result) * translate(-x, -y).
@@ -96,7 +100,7 @@ private:
     void buildTransformForTextOnPath(AffineTransform& result) const
     {
         // For text-on-path layout, multiply the transform with the lengthAdjustTransform before orienting the resulting transform.
-        result = lengthAdjustTransform.isIdentity() ? transform : transform * lengthAdjustTransform;
+        result = !affectedByTextLength() ? transform : transform * lengthAdjustTransform;
         if (!result.isIdentity())
             transformAroundOrigin(result);
     }