Remove WeakPtrFactory from PasswordAutofillAgent

components/autofill/content/renderer/password_autofill_agent.h

Index: components/autofill/content/renderer/password_autofill_agent.h
diff --git a/components/autofill/content/renderer/password_autofill_agent.h b/components/autofill/content/renderer/password_autofill_agent.h
index a6a4f05f2284a08a39909fb82d319fa8ffed9ca2..39bba48da1a09245e9b8cb2416b8350ac98ea4ac 100644
--- a/components/autofill/content/renderer/password_autofill_agent.h
+++ b/components/autofill/content/renderer/password_autofill_agent.h
@@ -10,7 +10,6 @@
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/weak_ptr.h"
 #include "components/autofill/content/renderer/password_form_conversion_utils.h"
 #include "components/autofill/core/common/form_data_predictions.h"
 #include "components/autofill/core/common/password_form_field_prediction_map.h"
@@ -240,8 +239,6 @@ class PasswordAutofillAgent : public content::RenderFrameObserver {
   // fields for individual forms.
   FormsPredictionsMap form_predictions_;
 
-  base::WeakPtrFactory<PasswordAutofillAgent> weak_ptr_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(PasswordAutofillAgent);
 };