[tracing] Adding class-wise memory statistics to blink gc memory dumps

Source/wtf/InstanceCounter.h

Index: Source/wtf/InstanceCounter.h
diff --git a/Source/wtf/InstanceCounter.h b/Source/wtf/InstanceCounter.h
index 9b5d6a40e8301ce65d5e9180eda078a8f22dc3d7..7b359ab374c6c6813d83cc341c62c06bcf33c3a4 100644
--- a/Source/wtf/InstanceCounter.h
+++ b/Source/wtf/InstanceCounter.h
@@ -34,10 +34,6 @@ namespace WTF {
 class String;
 WTF_EXPORT String dumpRefCountedInstanceCounts();
 
-#if ENABLE(INSTANCE_COUNTER) || ENABLE(GC_PROFILING)
-WTF_EXPORT void incrementInstanceCount(const char* extractNameFunctionName, void* ptr);
-WTF_EXPORT void decrementInstanceCount(const char* extractNameFunctionName, void* ptr);
-
 WTF_EXPORT String extractTypeNameFromFunctionName(const char* funcName);
 
 template<typename T>
@@ -46,6 +42,10 @@ inline const char* extractNameFunction()
     return WTF_PRETTY_FUNCTION;
 }
 
+#if ENABLE(INSTANCE_COUNTER) || ENABLE(GC_PROFILING)
+WTF_EXPORT void incrementInstanceCount(const char* extractNameFunctionName, void* ptr);
+WTF_EXPORT void decrementInstanceCount(const char* extractNameFunctionName, void* ptr);
+
 template<typename T>
 inline void incrementInstanceCount(T* p)
 {