[SVG] Fix CSS transform handling when zoomed.

Source/core/svg/SVGGraphicsElement.cpp

Index: Source/core/svg/SVGGraphicsElement.cpp
diff --git a/Source/core/svg/SVGGraphicsElement.cpp b/Source/core/svg/SVGGraphicsElement.cpp
index 9da02b36d0c5be6abf56906c9b2bd9bb4be5a591..6c3e1e3bea5c2cfb6092107d6fed7b74242112fc 100644
--- a/Source/core/svg/SVGGraphicsElement.cpp
+++ b/Source/core/svg/SVGGraphicsElement.cpp
@@ -74,6 +74,14 @@ AffineTransform SVGGraphicsElement::animatedLocalTransform() const
 
         // Flatten any 3D transform.
         matrix = transform.toAffineTransform();
+
+        // CSS bakes the zoom factor into lengths, including translation components.
+        // In order to align CSS & SVG transforms, we need to invert this operation.
+        float zoom = style->effectiveZoom();
+        if (zoom != 1) {
+            matrix.setE(matrix.e() / zoom);
+            matrix.setF(matrix.f() / zoom);
+        }
     } else {
         transformCurrentValue().concatenate(matrix);
     }