Implementaion for showing recently closed tabs list on right clicking new tab button.

chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc

Index: chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc	(revision 141203)
+++ chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc	(working copy)
@@ -27,6 +27,7 @@
 #include "chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.h"
 #include "chrome/browser/ui/gtk/tabs/tab_strip_menu_controller.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/browser/ui/tabs/recently_closed_tabs_menu_model.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
@@ -2170,6 +2171,22 @@
   return TRUE;
 }
 
+void TabStripGtk::ShowRecentlyClosedTabsMenu(GtkWidget* widget,
+                                             int button, guint32 event_time) {
+  Browser* browser = window_->browser();
+  DCHECK(browser);
+  menu_model_.reset(new RecentlyClosedTabsMenuModel(browser));
+  menu_.reset(new MenuGtk(this, menu_model_.get()));
+  menu_->PopupForWidget(widget, button, event_time);
+}
+
+gboolean TabStripGtk::OnButtonPress(GtkWidget* widget,
+                                    GdkEventButton* event) {
+  if (event->button == 3)
+    ShowRecentlyClosedTabsMenu(widget, event->button, event->time);
+  return FALSE;
+}
+
 void TabStripGtk::OnNewTabClicked(GtkWidget* widget) {
   GdkEvent* event = gtk_get_current_event();
   DCHECK_EQ(event->type, GDK_BUTTON_RELEASE);
@@ -2245,6 +2262,9 @@
   gtk_widget_set_tooltip_text(button->widget(),
       l10n_util::GetStringUTF8(IDS_TOOLTIP_NEW_TAB).c_str());
 
+  g_signal_connect(button->widget(), "button-press-event",
+                   G_CALLBACK(OnButtonPressThunk), this);
+
   // Let the middle mouse button initiate clicks as well.
   gtk_util::SetButtonTriggersNavigation(button->widget());
   g_signal_connect(button->widget(), "clicked",
@@ -2263,3 +2283,7 @@
   SkBitmap* mask = theme_service_->GetBitmapNamed(IDR_NEWTAB_BUTTON_MASK);
   newtab_button_->SetBackground(color, background, mask);
 }
+
+bool TabStripGtk::AlwaysShowIconForCmd(int command_id) const {
+  return true;
+}