Mark SVGURIReference::IsKnownAttribute static

Also use it SVGSMILElement::SvgAttributeChanged(...).

Change-Id: Ic3352bf30eda7b86736858e7f68c50a6ce8a628c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1912240
Commit-Queue: Philip Rogers <pdr@chromium.org>
Auto-Submit: Fredrik Söderquist <fs@opera.com>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714691}

third_party/blink/renderer/core/svg/animation/svg_smil_element.cc

@@ -38,7 +38,6 @@
 #include "third_party/blink/renderer/core/svg/animation/smil_time_container.h"
 #include "third_party/blink/renderer/core/svg/svg_svg_element.h"
 #include "third_party/blink/renderer/core/svg/svg_uri_reference.h"
-#include "third_party/blink/renderer/core/xlink_names.h"
 #include "third_party/blink/renderer/platform/heap/handle.h"
 #include "third_party/blink/renderer/platform/heap/heap.h"
 #include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
@@ -524,8 +523,7 @@ void SVGSMILElement::ParseAttribute(const AttributeModificationParams& params) {
 }
 
 void SVGSMILElement::SvgAttributeChanged(const QualifiedName& attr_name) {
-  if (attr_name.Matches(svg_names::kHrefAttr) ||
-      attr_name.Matches(xlink_names::kHrefAttr)) {
+  if (SVGURIReference::IsKnownAttribute(attr_name)) {
     // TODO(fs): Could be smarter here when 'href' is specified and 'xlink:href'
     // is changed.
     SVGElement::InvalidationGuard invalidation_guard(this);

third_party/blink/renderer/core/svg/svg_uri_reference.h

@@ -40,7 +40,7 @@ class CORE_EXPORT SVGURIReference : public GarbageCollectedMixin {
  public:
   virtual ~SVGURIReference() = default;
 
-  bool IsKnownAttribute(const QualifiedName&);
+  static bool IsKnownAttribute(const QualifiedName&);
 
   // Use this for accesses to 'href' or 'xlink:href' (in that order) for
   // elements where both are allowed and don't necessarily inherit from