Support currentScale for embedded SVG

third_party/WebKit/Source/core/svg/SVGSVGElement.h

Index: third_party/WebKit/Source/core/svg/SVGSVGElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGSVGElement.h b/third_party/WebKit/Source/core/svg/SVGSVGElement.h
index b9d053fa3fb58fe26652ecc9887f1211d5a3e9ec..076dd250434f236c1ee477013d6421e1d83298c3 100644
--- a/third_party/WebKit/Source/core/svg/SVGSVGElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGSVGElement.h
@@ -65,7 +65,7 @@ public:
     FloatSize currentViewportSize() const;
     FloatRect currentViewBoxRect() const;
 
-    float currentScale() const;
+    float currentScale() const { return m_currentScale; }

[fs, 2016/03/31 10:53:04]

Here we rely on the setter gating access and hence not allowing modifications if
this is not an outermost root. If the element is reparented though that will no
longer hold. I.e see:

https://svgwg.org/svg2-draft/struct.html#__svg__SVGSVGElement__currentScale

for the semantics of this property.

[Shanmuga Pandi, 2016/03/31 11:53:35]

Right!! Thanks for pointing out. Done

     void setCurrentScale(float scale);
 
     FloatPoint currentTranslate() { return m_translation->value(); }
@@ -161,6 +161,7 @@ private:
     RefPtrWillBeMember<SMILTimeContainer> m_timeContainer;
     RefPtrWillBeMember<SVGPoint> m_translation;
     RefPtrWillBeMember<SVGViewSpec> m_viewSpec;
+    float m_currentScale;
 
     friend class SVGCurrentTranslateTearOff;
 };