Add password manager autocomplete suggestion when a username element in clicked.

components/autofill/content/renderer/autofill_agent.h

Index: components/autofill/content/renderer/autofill_agent.h
diff --git a/components/autofill/content/renderer/autofill_agent.h b/components/autofill/content/renderer/autofill_agent.h
index cb4df0317f580c4c423bf3eae2749a7278ddb4e1..17f8c69c52ddbdf2f6c231c9a62eb241b7a1cdb8 100644
--- a/components/autofill/content/renderer/autofill_agent.h
+++ b/components/autofill/content/renderer/autofill_agent.h
@@ -140,11 +140,18 @@ class AutofillAgent : public content::RenderViewObserver,
   // |datalist_only| specifies whether all of <datalist> suggestions and no
   // autofill suggestions are shown. |autofill_on_empty_values| and
   // |requires_caret_at_end| are ignored if |datalist_only| is true.
+  // |show_full_suggestion_list| specifies that all autofill suggestions should
+  // be shown and none should be elided because of the current value of
+  // |element| (relevant for inline autocomplete).
+  // |show_password_suggestions_only| specifies that only show a suggestions box
+  // if |element| is part of a password form, otherwise show no suggestions.
   void ShowSuggestions(const blink::WebInputElement& element,
                        bool autofill_on_empty_values,
                        bool requires_caret_at_end,
                        bool display_warning_if_disabled,
-                       bool datalist_only);
+                       bool datalist_only,
+                       bool show_full_suggestion_list,
+                       bool show_password_suggestions_only);

[Garrett Casto, 2014/02/24 23:45:09]

This scares me a little, as it seems pretty easy to switch some of these around
on accident. But it was like this before, so I guess as long as we unit test
well enough it should be okay.

[jww, 2014/03/05 02:11:49]

I agree, although I'm not sure I see a better alternative.

 
   // Queries the browser for Autocomplete and Autofill suggestions for the given
   // |element|.