Use Chrome facilities for omnibox state save and restore on Mac.

chrome/browser/autocomplete/autocomplete_edit_view_mac.h

Index: chrome/browser/autocomplete/autocomplete_edit_view_mac.h
diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_mac.h b/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
index 521f5900fdeaf003c28c53b4ef87a4e31239f111..a69384100b00ae44ce473429085cddb246a4ad12 100644
--- a/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
@@ -43,9 +43,7 @@ class AutocompleteEditViewMac : public AutocompleteEditView {
   virtual const AutocompleteEditModel* model() const { return model_.get(); }
 
   virtual void SaveStateToTab(TabContents* tab);
-  virtual void Update(const TabContents* tab_for_state_restoring) {
-    NOTIMPLEMENTED();
-  }
+  virtual void Update(const TabContents* tab_for_state_restoring);
 
   virtual void OpenURL(const GURL& url,
                        WindowOpenDisposition disposition,
@@ -55,10 +53,12 @@ class AutocompleteEditViewMac : public AutocompleteEditView {
                        const std::wstring& keyword);
 
   virtual std::wstring GetText() const;
-  virtual void SetUserText(const std::wstring& text) { NOTIMPLEMENTED(); }
+  virtual void SetUserText(const std::wstring& text) {
+    SetUserText(text, text, true);
+  }
   virtual void SetUserText(const std::wstring& text,
                            const std::wstring& display_text,
-                           bool update_popup) { NOTIMPLEMENTED(); }
+                           bool update_popup);
 
   virtual void SetWindowTextAndCaretPos(const std::wstring& text,
                                         size_t caret_pos);