[Clean-up] Remove unused codes

components/autofill/content/renderer/autofill_agent.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_AUTOFILL_AGENT_H_
 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_AUTOFILL_AGENT_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 251 matching lines @@
 
   // The form element currently requesting an interactive autocomplete.
   blink::WebFormElement in_flight_request_form_;
 
   // Last form which was interacted with by the user.
   blink::WebFormElement last_interacted_form_;
 
   // Was the query node autofilled prior to previewing the form?
   bool was_query_node_autofilled_;
 
-  // Have we already shown Autofill suggestions for the field the user is
-  // currently editing?  Used to keep track of state for metrics logging.
-  bool has_shown_autofill_popup_for_current_edit_;
-
   // Whether or not to ignore text changes.  Useful for when we're committing
   // a composition when we are defocusing the WebView and we don't want to
   // trigger an autofill popup to show.
   bool ignore_text_changes_;
 
   // Whether the Autofill popup is possibly visible.  This is tracked as a
   // performance improvement, so that the IPC channel isn't flooded with
   // messages to close the Autofill popup when it can't possibly be showing.
   bool is_popup_possibly_visible_;
 
   // If the generation popup is possibly visible. This is tracked to prevent
   // generation UI from displaying at the same time as password manager UI.
   // This is needed because generation is shown on field focus vs. field click
   // for the password manager. TODO(gcasto): Have both UIs show on focus.
   bool is_generation_popup_possibly_visible_;
 
   mojo::BindingSet<mojom::AutofillAgent> bindings_;
 
   mojom::AutofillDriverPtr mojo_autofill_driver_;
 
   base::WeakPtrFactory<AutofillAgent> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillAgent);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_RENDERER_AUTOFILL_AGENT_H_