Heap profiler: remove context checks for objects.

src/profile-generator.cc

Index: src/profile-generator.cc
diff --git a/src/profile-generator.cc b/src/profile-generator.cc
index a4d9a828dd4ea7b5b05fada3f0d391c7b9002c0b..29f9ab4d3536c4714639ce92caa65dcdb635bd0a 100644
--- a/src/profile-generator.cc
+++ b/src/profile-generator.cc
@@ -1848,22 +1848,6 @@ HeapEntry* HeapSnapshotGenerator::GetEntry(Object* obj) {
 }
 
 
-int HeapSnapshotGenerator::GetGlobalSecurityToken() {
-  return collection_->token_enumerator()->GetTokenId(
-      Top::context()->global()->global_context()->security_token());
-}
-
-
-int HeapSnapshotGenerator::GetObjectSecurityToken(HeapObject* obj) {
-  if (obj->IsGlobalContext()) {
-    return collection_->token_enumerator()->GetTokenId(
-        Context::cast(obj)->security_token());
-  } else {
-    return TokenEnumerator::kNoSecurityToken;
-  }
-}
-
-
 class IndexedReferencesExtractor : public ObjectVisitor {
  public:
   IndexedReferencesExtractor(HeapSnapshotGenerator* generator,
@@ -1893,19 +1877,11 @@ class IndexedReferencesExtractor : public ObjectVisitor {
 
 void HeapSnapshotGenerator::ExtractReferences(HeapObject* obj) {
   // We need to reference JS global objects from snapshot's root.
-  // We also need to only include global objects from the current
-  // security context. And we don't want to add the global proxy,
-  // as we don't have a special type for it.
+  // We use JSGlobalProxy because this is what embedder (e.g. browser)
+  // uses for the global object.
   if (obj->IsJSGlobalProxy()) {
-    int global_security_token = GetGlobalSecurityToken();
     JSGlobalProxy* proxy = JSGlobalProxy::cast(obj);
-    int object_security_token =
-        collection_->token_enumerator()->GetTokenId(
-            Context::cast(proxy->context())->security_token());
-    if (object_security_token == TokenEnumerator::kNoSecurityToken
-        || object_security_token == global_security_token) {
-      SetRootReference(proxy->map()->prototype());
-    }
+    SetRootReference(proxy->map()->prototype());
     return;
   }