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

components/autofill/renderer/autofill_agent.cc

 // 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.
 
 #include "components/autofill/renderer/autofill_agent.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
@@ skipping 784 matching lines @@
       (!autofill_on_empty_values && value.isEmpty()) ||
       (requires_caret_at_end &&
        (element.selectionStart() != element.selectionEnd() ||
         element.selectionEnd() != static_cast<int>(value.length())))) {
     // Any popup currently showing is obsolete.
     HideAutofillUi();
     return;
   }
 
   element_ = element;
+  if (password_autofill_agent_->ShowSuggestions(element))
+    return;
 
   // If autocomplete is disabled at the form level, then we might want to show a
   // warning in place of suggestions.  However, if autocomplete is disabled
   // specifically for this field, we never want to show a warning.  Otherwise,
   // we might interfere with custom popups (e.g. search suggestions) used by the
   // website.  Note that we cannot use the WebKit method element.autoComplete()
   // as it does not allow us to distinguish the case where autocomplete is
   // disabled for *both* the element and for the form.
   // Also, if the field has no name, then we won't have values.
   const string16 autocomplete_attribute = element.getAttribute("autocomplete");
@@ skipping 109 matching lines @@
     web_view->hidePopups();
 
   HideHostAutofillUi();
 }
 
 void AutofillAgent::HideHostAutofillUi() {
   Send(new AutofillHostMsg_HideAutofillUi(routing_id()));
 }
 
 }  // namespace autofill