Remove OILPAN from core/dom/custom/

third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp

Index: third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp b/third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp
index 8c4a5c7549b531b153fda096d76e80b18a3e19e8..dbc26b5f3d6a922b2f224371b4e73f5a8bb298f6 100644
--- a/third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp
@@ -41,13 +41,6 @@ CustomElementUpgradeCandidateMap* CustomElementUpgradeCandidateMap::create()
 
 CustomElementUpgradeCandidateMap::~CustomElementUpgradeCandidateMap()
 {
-#if !ENABLE(OILPAN)
-    // With Oilpan enabled, the observer table keeps a weak reference to the
-    // element; no need for explicit removal.
-    UpgradeCandidateMap::const_iterator::KeysIterator end = m_upgradeCandidates.end().keys();
-    for (UpgradeCandidateMap::const_iterator::KeysIterator it = m_upgradeCandidates.begin().keys(); it != end; ++it)
-        unobserve(*it);
-#endif
 }
 
 void CustomElementUpgradeCandidateMap::add(const CustomElementDescriptor& descriptor, Element* element)