Simplify "is external URL" in filter operations resolving

third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp

Index: third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp b/third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp
index ffcde3df647e1c5efed20c04e8564a7a0e6abee9..d41a8cfe79af2de57cee6ad81d6c7a4ea327bfc7 100644
--- a/third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/FilterOperationResolver.cpp
@@ -34,8 +34,6 @@
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/frame/UseCounter.h"
 #include "core/layout/svg/ReferenceFilterBuilder.h"
-#include "core/svg/SVGElement.h"
-#include "core/svg/SVGURIReference.h"
 
 namespace blink {
 
@@ -139,7 +137,7 @@ FilterOperations FilterOperationResolver::createFilterOperations(StyleResolverSt
             KURL url = state.document().completeURL(svgDocumentValue.url());
 
             ReferenceFilterOperation* operation = ReferenceFilterOperation::create(svgDocumentValue.url(), AtomicString(url.fragmentIdentifier()));
-            if (SVGURIReference::isExternalURIReference(svgDocumentValue.url(), state.document())) {
+            if (!equalIgnoringFragmentIdentifier(url, state.document().url())) {
                 if (!svgDocumentValue.loadRequested())
                     state.elementStyleResources().addPendingSVGDocument(operation, &svgDocumentValue);
                 else if (svgDocumentValue.cachedSVGDocument())