Microoptimisation for OnLibeventNotification.

base/message_loop/message_pump_libevent.h

Index: base/message_loop/message_pump_libevent.h
diff --git a/base/message_loop/message_pump_libevent.h b/base/message_loop/message_pump_libevent.h
index 3f5ad51dae91d8a7f3f7017ab3968281e6ee6ce3..8b815aea588294002662dddb2c83f873e6240d6f 100644
--- a/base/message_loop/message_pump_libevent.h
+++ b/base/message_loop/message_pump_libevent.h
@@ -7,7 +7,6 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_pump.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
@@ -86,7 +85,9 @@ class BASE_EXPORT MessagePumpLibevent : public MessagePump {
     event* event_;
     MessagePumpLibevent* pump_;
     Watcher* watcher_;
-    WeakPtrFactory<FileDescriptorWatcher> weak_factory_;
+    // If this pointer is non-NULL, the pointee is set to true in the
+    // destructor.
+    bool* was_destroyed_;
 
     DISALLOW_COPY_AND_ASSIGN(FileDescriptorWatcher);
   };