Add a (non functional) gtk KeywordEditorWindow and hook it up in the relevant places.

chrome/browser/gtk/options/general_page_gtk.cc

Index: chrome/browser/gtk/options/general_page_gtk.cc
diff --git a/chrome/browser/gtk/options/general_page_gtk.cc b/chrome/browser/gtk/options/general_page_gtk.cc
index 395adcab5abc4233e6462d63fdfde894544c268c..589f8ea5e587bbc9b675668c08382dda42cb8b46 100644
--- a/chrome/browser/gtk/options/general_page_gtk.cc
+++ b/chrome/browser/gtk/options/general_page_gtk.cc
@@ -10,6 +10,7 @@
 #include "base/gfx/png_decoder.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
+#include "chrome/browser/gtk/keyword_editor_view.h"
 #include "chrome/browser/gtk/options/options_layout_gtk.h"
 #include "chrome/browser/gtk/options/url_picker_dialog_gtk.h"
 #include "chrome/browser/net/url_fixer_upper.h"
@@ -325,10 +326,11 @@ GtkWidget* GeneralPageGtk::InitDefaultSearchGroup() {
   }
   OnTemplateURLModelChanged();
 
-  // TODO(mattm): hook this up
   default_search_manage_engines_button_ = gtk_button_new_with_label(
       l10n_util::GetStringUTF8(
           IDS_OPTIONS_DEFAULTSEARCH_MANAGE_ENGINES_LINK).c_str());
+  g_signal_connect(G_OBJECT(default_search_manage_engines_button_), "clicked",
+                   G_CALLBACK(OnDefaultSearchManageEnginesClicked), this);
   gtk_box_pack_end(GTK_BOX(hbox), default_search_manage_engines_button_,
                    FALSE, FALSE, 0);
 
@@ -468,6 +470,12 @@ void GeneralPageGtk::OnDefaultSearchEngineChanged(
 }
 
 // static
+void GeneralPageGtk::OnDefaultSearchManageEnginesClicked(
+    GtkButton* button, GeneralPageGtk* general_page) {
+  KeywordEditorView::Show(general_page->profile());
+}
+
+// static
 void GeneralPageGtk::OnBrowserUseAsDefaultClicked(
     GtkButton* button,
     GeneralPageGtk* general_page) {