Reland r105450: Linux: add basic bookmark menu support. More features can be added later.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
===================================================================
--- chrome/chrome_browser.gypi	(revision 105454)
+++ chrome/chrome_browser.gypi	(working copy)
@@ -2885,6 +2885,8 @@
         'browser/ui/gtk/bookmarks/bookmark_tree_model.h',
         'browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc',
         'browser/ui/gtk/bookmarks/bookmark_utils_gtk.h',
+        'browser/ui/gtk/bookmark_sub_menu_model_gtk.cc',
+        'browser/ui/gtk/bookmark_sub_menu_model_gtk.h',
         'browser/ui/gtk/browser_actions_toolbar_gtk.cc',
         'browser/ui/gtk/browser_actions_toolbar_gtk.h',
         'browser/ui/gtk/browser_titlebar.cc',
@@ -3180,6 +3182,8 @@
         'browser/ui/tabs/tab_resources.h',
         'browser/ui/toolbar/back_forward_menu_model.cc',
         'browser/ui/toolbar/back_forward_menu_model.h',
+        'browser/ui/toolbar/bookmark_sub_menu_model.cc',
+        'browser/ui/toolbar/bookmark_sub_menu_model.h',
         'browser/ui/toolbar/encoding_menu_controller.cc',
         'browser/ui/toolbar/encoding_menu_controller.h',
         'browser/ui/toolbar/toolbar_model.cc',
@@ -4924,6 +4928,9 @@
                 ['exclude', '^browser/ui/panels/panel_browser_view.cc'],
                 ['exclude', '^browser/ui/panels/panel_browser_view.h'],
               ],
+              'sources!': [
+                'browser/ui/toolbar/bookmark_sub_menu_model.cc',
+              ],
             }],
             # Touch build only
             ['OS=="linux" and toolkit_views==1 and touchui==1', {