[GTK] add instant pref

chrome/browser/gtk/options/general_page_gtk.h

Index: chrome/browser/gtk/options/general_page_gtk.h
diff --git a/chrome/browser/gtk/options/general_page_gtk.h b/chrome/browser/gtk/options/general_page_gtk.h
index 143f447a8a237df8b26a14cc1c4260af9b33f1ae..e788476aa05ae8f8b909d27496325d52e7d10e27 100644
--- a/chrome/browser/gtk/options/general_page_gtk.h
+++ b/chrome/browser/gtk/options/general_page_gtk.h
@@ -92,7 +92,11 @@ class GeneralPageGtk : public OptionsPageBase,
   CHROMEGTK_CALLBACK_0(GeneralPageGtk, void, OnDefaultSearchEngineChanged);
   CHROMEGTK_CALLBACK_0(GeneralPageGtk, void,
                        OnDefaultSearchManageEnginesClicked);
+  CHROMEGTK_CALLBACK_0(GeneralPageGtk, void, OnInstantToggled);
   CHROMEGTK_CALLBACK_0(GeneralPageGtk, void, OnBrowserUseAsDefaultClicked);
+  CHROMEGTK_CALLBACK_1(GeneralPageGtk, void, OnInstantLabelSizeAllocate,
+                       GtkAllocation*);
+  CHROMEGTK_CALLBACK_0(GeneralPageGtk, void, OnSearchLearnMoreClicked);
 
   CHROMEG_CALLBACK_0(GeneralPageGtk, void, OnStartupPagesSelectionChanged,
                      GtkTreeSelection*);
@@ -137,6 +141,10 @@ class GeneralPageGtk : public OptionsPageBase,
   GtkListStore* default_search_engines_model_;
   GtkWidget* default_search_manage_engines_button_;
   TemplateURLModel* template_url_model_;
+  GtkWidget* instant_checkbox_;
+  // This widget acts as the indent for the instant warning label.
+  GtkWidget* instant_indent_;
+  BooleanPrefMember instant_;
 
   // Widgets of the default browser group
   GtkWidget* default_browser_status_label_;