[autofill] Adding new API to request an interactive autocomplete UI flow.

chrome/renderer/autofill/autofill_agent.h

Index: chrome/renderer/autofill/autofill_agent.h
diff --git a/chrome/renderer/autofill/autofill_agent.h b/chrome/renderer/autofill/autofill_agent.h
index cc60560a395426c1143f3a140e87ccf7284b11f5..aea8047d8c852deecd7449a16f79387090134122 100644
--- a/chrome/renderer/autofill/autofill_agent.h
+++ b/chrome/renderer/autofill/autofill_agent.h
@@ -88,6 +88,9 @@ class AutofillAgent : public content::RenderViewObserver,
   virtual void textFieldDidReceiveKeyDown(
       const WebKit::WebInputElement& element,
       const WebKit::WebKeyboardEvent& event) OVERRIDE;
+  virtual void didRequestAutocomplete(
+      WebKit::WebFrame* frame,
+      const WebKit::WebFormElement& form) OVERRIDE;
 
   void OnSuggestionsReturned(int query_id,
                              const std::vector<string16>& values,
@@ -107,6 +110,9 @@ class AutofillAgent : public content::RenderViewObserver,
   void OnAcceptDataListSuggestion(const string16& value);
   void OnAcceptPasswordAutofillSuggestion(const string16& value);
 
+  // For interactive autocomplete.
+  void OnRequestAutocompleteFinished(int result);
+
   // Called in a posted task by textFieldDidChange() to work-around a WebKit bug
   // http://bugs.webkit.org/show_bug.cgi?id=16976
   void TextFieldDidChangeImpl(const WebKit::WebInputElement& element);
@@ -162,6 +168,9 @@ class AutofillAgent : public content::RenderViewObserver,
   // Set |node| to display the given |value|.
   void SetNodeText(const string16& value, WebKit::WebInputElement* node);
 
+  // Hides any currently showing Autofill popups.
+  void HidePopups();
+
   FormCache form_cache_;
 
   PasswordAutofillManager* password_autofill_manager_;  // WEAK reference.
@@ -173,6 +182,10 @@ class AutofillAgent : public content::RenderViewObserver,
   // The element corresponding to the last request sent for form field Autofill.
   WebKit::WebInputElement element_;
 
+  // The element corresponding to the last request sent for an interactive
+  // autocomplete.
+  WebKit::WebFormElement form_;
+
   // The action to take when receiving Autofill data from the AutofillManager.
   AutofillAction autofill_action_;
 
@@ -189,6 +202,9 @@ class AutofillAgent : public content::RenderViewObserver,
   // If true we just set the node text so we shouldn't show the popup.
   bool did_set_node_text_;
 
+  // Whether there is a pending request for an interactive autocomplete.
+  bool has_requested_autocomplete_;
+
   base::WeakPtrFactory<AutofillAgent> weak_ptr_factory_;
 
   friend class PasswordAutofillManagerTest;