Fix the toolkit_views gyp variable define mania.

chrome/chrome_browser.gypi

 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 3060 matching lines @@
                 ['exclude', '^browser/extensions/extension_host_mac.h'],
                 ['exclude', '^browser/extensions/extension_host_mac.mm'],
                 ['exclude', '^browser/extensions/external_registry_extension_provider_win.cc'],
                 ['exclude', '^browser/tab_contents/tab_contents_view_gtk.cc'],
                 ['exclude', '^browser/tab_contents/tab_contents_view_gtk.h'],
                 ['exclude', '^browser/tab_contents/render_view_context_menu_gtk.cc'],
                 ['exclude', '^browser/tab_contents/render_view_context_menu_gtk.h'],
                 ['exclude', '^browser/browser_list_gtk.cc'],
               ],
             }],
-            ['OS=="linux" and toolkit_views==1', {
+            # These GTK files haven't been ported to views, while ChromeOS has
+            # its own separate implementation below.  So re-include them only on
+            # non-ChromeOS views Linux builds.
+            ['OS=="linux" and chromeos==0 and toolkit_views==1', {
               'sources/': [
                 ['include', '^browser/gtk/dialogs_gtk.cc'],
                 ['include', '^browser/gtk/external_protocol_dialog_gtk.cc'],
                 ['include', '^browser/gtk/external_protocol_dialog_gtk.h'],
                 ['include', '^browser/views/notifications/balloon_view.cc'],
                 ['include', '^browser/views/notifications/balloon_view.h'],
 
                 ['exclude', '^browser/views/select_file_dialog.cc'],
               ],
             }],
@@ skipping 210 matching lines @@
       ]
     },
   ],
 }
 
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