Count internal use of DOMImplementation::hasFeature() returning false

Source/core/svg/SVGTests.cpp

Index: Source/core/svg/SVGTests.cpp
diff --git a/Source/core/svg/SVGTests.cpp b/Source/core/svg/SVGTests.cpp
index 9da4a2a8719a21d36181824575484b06ba4881a6..35f117f429c7f29fe7c55a6169855b585a84604b 100644
--- a/Source/core/svg/SVGTests.cpp
+++ b/Source/core/svg/SVGTests.cpp
@@ -24,8 +24,9 @@
 
 #include "core/SVGNames.h"
 #include "core/dom/DOMImplementation.h"
-#include "platform/Language.h"
+#include "core/frame/UseCounter.h"
 #include "core/svg/SVGElement.h"
+#include "platform/Language.h"
 
 namespace blink {
 
@@ -47,15 +48,17 @@ bool SVGTests::hasExtension(const String&)
     return false;
 }
 
-bool SVGTests::isValid() const
+bool SVGTests::isValid(Document& document) const
 {
     if (m_requiredFeatures->isSpecified()) {
         const Vector<String>& requiredFeatures = m_requiredFeatures->value()->values();
         Vector<String>::const_iterator it = requiredFeatures.begin();
         Vector<String>::const_iterator itEnd = requiredFeatures.end();
         for (; it != itEnd; ++it) {
-            if (it->isEmpty() || !DOMImplementation::hasFeature(*it, String()))
+            if (it->isEmpty() || !DOMImplementation::hasFeature(*it, String())) {
+                UseCounter::count(document, UseCounter::SVGRequiredFeatures);

[kouhei (in TOK), 2014/11/08 23:51:42]

This UseCounter is counted if requiredFeatures is used and if it is used to
disable displaying the nodes.

Would you rename the UseCounter name and update the CL description that this is
clear?

                 return false;
+            }
         }
     }