Count DOMImplementation.hasFeature usage and cases where it returns false

Source/core/dom/DOMImplementation.cpp

Index: Source/core/dom/DOMImplementation.cpp
diff --git a/Source/core/dom/DOMImplementation.cpp b/Source/core/dom/DOMImplementation.cpp
index cbd66aabd8afd88fc2da30bc36285b5ec092b27c..e85a2d044a6ecc3e03a501f44f19566a13c8bde0 100644
--- a/Source/core/dom/DOMImplementation.cpp
+++ b/Source/core/dom/DOMImplementation.cpp
@@ -46,6 +46,7 @@
 #include "core/html/TextDocument.h"
 #include "core/loader/FrameLoader.h"
 #include "core/frame/Frame.h"
+#include "core/frame/UseCounter.h"
 #include "core/page/Page.h"
 #include "core/svg/SVGDocument.h"
 #include "platform/ContentType.h"
@@ -177,6 +178,15 @@ bool DOMImplementation::hasFeature(const String& feature, const String& version)
     return true;
 }
 
+bool DOMImplementation::hasFeatureForBindings(const String& feature, const String& version)
+{
+    if (!hasFeature(feature, version)) {
+        UseCounter::count(m_document, UseCounter::DOMImplementationHasFeatureReturnFalse);
+        return false;
+    }
+    return true;
+}
+
 PassRefPtr<DocumentType> DOMImplementation::createDocumentType(const AtomicString& qualifiedName,
     const String& publicId, const String& systemId, ExceptionState& exceptionState)
 {