diff --git a/atom/browser/api/atom_api_debugger.cc b/atom/browser/api/atom_api_debugger.cc
index 828c573188d..03490360133 100644
--- a/atom/browser/api/atom_api_debugger.cc
+++ b/atom/browser/api/atom_api_debugger.cc
@@ -167,16 +167,8 @@ void Debugger::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("sendCommand", &Debugger::SendCommand);
 }
 
-void ClearWrapDebugger() {
-  g_wrap_debugger.Reset();
-}
-
 void SetWrapDebugger(const WrapDebuggerCallback& callback) {
   g_wrap_debugger = callback;
-
-  // Cleanup the wrapper on exit.
-  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
-      base::Bind(ClearWrapDebugger));
 }
 
 }  // namespace api
diff --git a/atom/browser/api/atom_api_download_item.cc b/atom/browser/api/atom_api_download_item.cc
index 10f7c454625..96826a250f5 100644
--- a/atom/browser/api/atom_api_download_item.cc
+++ b/atom/browser/api/atom_api_download_item.cc
@@ -184,16 +184,8 @@ mate::Handle<DownloadItem> DownloadItem::Create(
   return handle;
 }
 
-void ClearWrapDownloadItem() {
-  g_wrap_download_item.Reset();
-}
-
 void SetWrapDownloadItem(const WrapDownloadItemCallback& callback) {
   g_wrap_download_item = callback;
-
-  // Cleanup the wrapper on exit.
-  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
-      base::Bind(ClearWrapDownloadItem));
 }
 
 }  // namespace api
diff --git a/atom/browser/api/atom_api_session.cc b/atom/browser/api/atom_api_session.cc
index 140135d329e..ec4e2aebe4c 100644
--- a/atom/browser/api/atom_api_session.cc
+++ b/atom/browser/api/atom_api_session.cc
@@ -494,16 +494,8 @@ void Session::BuildPrototype(v8::Isolate* isolate,
       .SetProperty("webRequest", &Session::WebRequest);
 }
 
-void ClearWrapSession() {
-  g_wrap_session.Reset();
-}
-
 void SetWrapSession(const WrapSessionCallback& callback) {
   g_wrap_session = callback;
-
-  // Cleanup the wrapper on exit.
-  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
-      base::Bind(ClearWrapSession));
 }
 
 }  // namespace api
diff --git a/atom/browser/api/atom_api_web_contents.cc b/atom/browser/api/atom_api_web_contents.cc
index cec998a8722..a48277490b0 100644
--- a/atom/browser/api/atom_api_web_contents.cc
+++ b/atom/browser/api/atom_api_web_contents.cc
@@ -1309,16 +1309,8 @@ mate::Handle<WebContents> WebContents::Create(
   return handle;
 }
 
-void ClearWrapWebContents() {
-  g_wrap_web_contents.Reset();
-}
-
 void SetWrapWebContents(const WrapWebContentsCallback& callback) {
   g_wrap_web_contents = callback;
-
-  // Cleanup the wrapper on exit.
-  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
-      base::Bind(ClearWrapWebContents));
 }
 
 }  // namespace api
diff --git a/atom/browser/api/trackable_object.h b/atom/browser/api/trackable_object.h
index 5a036f4297d..1c71d84e42c 100644
--- a/atom/browser/api/trackable_object.h
+++ b/atom/browser/api/trackable_object.h
@@ -114,8 +114,6 @@ class TrackableObject : public TrackableObjectBase,
   void AfterInit(v8::Isolate* isolate) override {
     if (!weak_map_) {
       weak_map_.reset(new atom::IDWeakMap);
-      RegisterDestructionCallback(
-          base::Bind(&TrackableObject<T>::ReleaseAllWeakReferences));
     }
     weak_map_id_ = weak_map_->Add(isolate, Wrappable<T>::GetWrapper());
     if (wrapped_)
@@ -123,11 +121,6 @@ class TrackableObject : public TrackableObjectBase,
   }
 
  private:
-  // Releases all weak references in weak map, called when app is terminating.
-  static void ReleaseAllWeakReferences() {
-    weak_map_.reset();
-  }
-
   static scoped_ptr<atom::IDWeakMap> weak_map_;
 
   DISALLOW_COPY_AND_ASSIGN(TrackableObject);