Remove effective zoom from font metrics before SVG text layout.

Source/core/layout/svg/SVGTextLayoutEngineBaseline.h

Index: Source/core/layout/svg/SVGTextLayoutEngineBaseline.h
diff --git a/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h b/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h
index 96e3325c05ba5e0d513eeb9a152439da2210809d..d7497c794a797aeaa70cdf7593a5c9c7caad6292 100644
--- a/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h
+++ b/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h
@@ -36,7 +36,7 @@ class SVGTextMetrics;
 class SVGTextLayoutEngineBaseline {
     WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline);
 public:
-    SVGTextLayoutEngineBaseline(const Font&);
+    SVGTextLayoutEngineBaseline(const Font&, float effectiveZoom);
 
     float calculateBaselineShift(const ComputedStyle&) const;
     float calculateAlignmentBaselineShift(bool isVerticalText, const LayoutObject* textRenderer) const;
@@ -47,6 +47,11 @@ private:
     EAlignmentBaseline dominantBaselineToAlignmentBaseline(bool isVerticalText, const LayoutObject* textRenderer) const;
 
     const Font& m_font;
+
+    // Everything we read from the m_font's font descriptor during layout is scaled by the effective
+    // zoom, as fonts always are in computed style. Since layout inside SVG takes place in unzoomed
+    // coordinates we have to compensate for zoom when reading values from the font descriptor.
+    float m_effectiveZoom;
 };
 
 } // namespace blink