AutoFill: Preview form field values when the user changes the AutoFill dropdown

chrome/renderer/render_view.h

Index: chrome/renderer/render_view.h
diff --git a/chrome/renderer/render_view.h b/chrome/renderer/render_view.h
index 5da8469ecb7a775e4bb9f7b3d1cfaa796d6eda7b..60eb2a7d255ed9062d8b342ad7b30731a1052a51 100644
--- a/chrome/renderer/render_view.h
+++ b/chrome/renderer/render_view.h
@@ -282,6 +282,11 @@ class RenderView : public RenderWidget,
       const WebKit::WebNode& node,
       const WebKit::WebString& value,
       const WebKit::WebString& label);
+  virtual void didSelectAutoFillSuggestion(
+      const WebKit::WebNode& node,
+      const WebKit::WebString& value,
+      const WebKit::WebString& label);
+  virtual void didClearAutoFillSelection(const WebKit::WebNode& node);
 
   virtual WebKit::WebNotificationPresenter* GetNotificationPresenter() {
     return notification_provider_.get();
@@ -571,6 +576,12 @@ class RenderView : public RenderWidget,
   typedef std::map<GURL, ContentSettings> HostContentSettings;
   typedef std::map<GURL, int> HostZoomLevels;
 
+  enum AutoFillAction {
+    AUTOFILL_NONE,    // No state set.
+    AUTOFILL_FILL,    // Fill the AutoFill form data.
+    AUTOFILL_PREVIEW, // Preview the AutoFill form data.
+  };
+
   explicit RenderView(RenderThreadBase* render_thread,
                       const WebPreferences& webkit_preferences,
                       int64 session_storage_namespace_id);
@@ -929,6 +940,15 @@ class RenderView : public RenderWidget,
                                     WebKit::WebFrame* frame,
                                     WebKit::WebNavigationType type);
 
+  // Queries the AutoFillManager for form data for the form containing |node|.
+  // |value| is the current text in the field, and |label| is the selected
+  // profile label.  |action| specifies whether to Fill or Preview the values
+  // returned from the AutoFillManager.
+  void QueryAutoFillFormData(const WebKit::WebNode& node,
+                             const WebKit::WebString& value,
+                             const WebKit::WebString& label,
+                             AutoFillAction action);
+
   // Bitwise-ORed set of extra bindings that have been enabled.  See
   // BindingsPolicy for details.
   int enabled_bindings_;
@@ -1221,6 +1241,9 @@ class RenderView : public RenderWidget,
 
   PepperPluginDelegateImpl pepper_delegate_;
 
+  // The action to take when receiving AutoFill data from the AutoFillManager.
+  AutoFillAction autofill_action_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };