Remove ENABLE(INSTANCE_COUNTER) code.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index f1c08e7b064331390034129e1df03e50e74d4521..45a76685ad50b7579d55cfcd01f711296e0e2778 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -145,7 +145,6 @@
 #include "platform/scroll/ScrollbarTheme.h"
 #include "platform/testing/URLTestHelpers.h"
 #include "platform/weborigin/SchemeRegistry.h"
-#include "platform/wtf/InstanceCounter.h"
 #include "platform/wtf/Optional.h"
 #include "platform/wtf/PtrUtil.h"
 #include "platform/wtf/dtoa.h"
@@ -1981,10 +1980,6 @@ unsigned Internals::numberOfLiveDocuments() const {
   return InstanceCounters::CounterValue(InstanceCounters::kDocumentCounter);
 }
 
-String Internals::dumpRefCountedInstanceCounts() const {
-  return WTF::DumpRefCountedInstanceCounts();
-}
-
 bool Internals::hasGrammarMarker(Document* document,
                                  int from,
                                  int length,