Rework SVGViewSpec<->SVGSVGElement integration

third_party/WebKit/Source/core/svg/SVGViewSpec.cpp

Index: third_party/WebKit/Source/core/svg/SVGViewSpec.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGViewSpec.cpp b/third_party/WebKit/Source/core/svg/SVGViewSpec.cpp
index 23fdd2a9ae66cac2b3f933393c6dc491ec84b4a8..a8098ef4faf0b951f95b1b38f0a91a156fd0e46f 100644
--- a/third_party/WebKit/Source/core/svg/SVGViewSpec.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGViewSpec.cpp
@@ -22,6 +22,7 @@
 #include "core/svg/SVGParserUtilities.h"
 #include "core/svg/SVGPreserveAspectRatio.h"
 #include "core/svg/SVGRect.h"
+#include "core/svg/SVGSVGElement.h"
 #include "core/svg/SVGTransformList.h"
 #include "wtf/text/ParsingUtilities.h"
 
@@ -38,6 +39,16 @@ DEFINE_TRACE(SVGViewSpec) {
   visitor->trace(m_transform);
 }
 
+SVGViewSpec* SVGViewSpec::createForElement(SVGSVGElement& rootElement) {
+  SVGViewSpec* viewSpec = rootElement.viewSpec();
+  if (!viewSpec)
+    viewSpec = new SVGViewSpec();
+  else
+    viewSpec->reset();
+  viewSpec->inheritViewAttributesFromElement(rootElement);
+  return viewSpec;
+}
+
 bool SVGViewSpec::parseViewSpec(const String& spec) {
   if (spec.isEmpty())
     return false;