[Autofill] Give the PasswordAutofillAgent first shot at handling mouse events.

components/autofill/renderer/password_autofill_agent.h

 // Copyright (c) 2012 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_RENDERER_PASSWORD_AUTOFILL_AGENT_H_
 #define COMPONENTS_AUTOFILL_RENDERER_PASSWORD_AUTOFILL_AGENT_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 31 matching lines @@
   // username and password fields were filled, false otherwise.
   bool DidAcceptAutofillSuggestion(const WebKit::WebNode& node,
                                    const WebKit::WebString& value);
   // A no-op.  No filling happens for selection.  But this method returns
   // true when |node| is fillable by password Autofill.
   bool DidSelectAutofillSuggestion(const WebKit::WebNode& node);
   // A no-op.  Password forms are not previewed, so they do not need to be
   // cleared when the selection changes.  However, this method returns
   // true when |node| is fillable by password Autofill.
   bool DidClearAutofillSelection(const WebKit::WebNode& node);
+  // Shows an Autofill popup with username suggestions for |element|.
+  // Returns true if any suggestions were shown, false otherwise.
+  bool ShowSuggestions(const WebKit::WebInputElement& element);
 
  private:
   friend class PasswordAutofillAgentTest;
 
   struct PasswordInfo {
     WebKit::WebInputElement password_field;
     PasswordFormFillData fill_data;
     bool backspace_pressed_last;
     PasswordInfo() : backspace_pressed_last(false) {}
   };
@@ skipping 60 matching lines @@
   WebKit::WebView* web_view_;
 
   base::WeakPtrFactory<PasswordAutofillAgent> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordAutofillAgent);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_RENDERER_PASSWORD_AUTOFILL_AGENT_H_