Introduce InspectorIdentifiers<> and use it to assign/lookup LocalFrame and DocumentLoader

Source/core/dom/DOMNodeIds.cpp

Index: Source/core/dom/DOMNodeIds.cpp
diff --git a/Source/core/dom/DOMNodeIds.cpp b/Source/core/dom/DOMNodeIds.cpp
index 532f4e9a701928289f5e5e512a04e6df0099350d..4eb92347882cf560f7c8cd635ebcce789cdc76a9 100644
--- a/Source/core/dom/DOMNodeIds.cpp
+++ b/Source/core/dom/DOMNodeIds.cpp
@@ -4,11 +4,12 @@
 
 #include "config.h"
 #include "core/dom/DOMNodeIds.h"
-#include "core/dom/Node.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
+template class WeakIdentifierMap<Node>;
+
 #if !ENABLE(OILPAN)
 void WeakIdentifierMapTraits<Node>::removedFromIdentifierMap(Node* node)
 {
@@ -23,7 +24,7 @@ void WeakIdentifierMapTraits<Node>::addedToIdentifierMap(Node* node)
 
 static WeakNodeMap& nodeIds()
 {
-    DEFINE_STATIC_LOCAL(RawPtrWillBePersistent<WeakNodeMap>, self, (new WeakNodeMap()));
+    DEFINE_STATIC_LOCAL(WeakNodeMap::ReferenceType, self, (new WeakNodeMap()));
     return *self;
 }