Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h

Index: third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h b/third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h
index 68b462cfbb829b7666a26fbcd6384ee8f82c5f27..9d838062c1a91a625d5670f14a7fce1d93e888f8 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBObjectStore.h
@@ -64,7 +64,7 @@ public:
     int64_t id() const { return m_metadata.id; }
     const String& name() const { return m_metadata.name; }
     ScriptValue keyPath(ScriptState*) const;
-    PassRefPtrWillBeRawPtr<DOMStringList> indexNames() const;
+    RawPtr<DOMStringList> indexNames() const;
     IDBTransaction* transaction() const { return m_transaction.get(); }
     bool autoIncrement() const { return m_metadata.autoIncrement; }