Making TOOLKIT_USES_GTK orthogonal to USE_AURA.

content/content_browser.gypi

 # Copyright (c) 2011 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.
 
 {
       # TODO(dpranke): Fix indentation.
       'dependencies': [
         '../crypto/crypto.gyp:crypto',
         '../net/net.gyp:net',
         '../net/net.gyp:http_server',
@@ skipping 610 matching lines @@
         }],
         ['use_aura==1', {
           'sources/': [
             ['exclude', '^browser/accessibility/browser_accessibility_manager_win.cc'],
             ['exclude', '^browser/accessibility/browser_accessibility_manager_win.h'],
             ['exclude', '^browser/accessibility/browser_accessibility_win.cc'],
             ['exclude', '^browser/accessibility/browser_accessibility_win.h'],
             ['exclude', '^browser/renderer_host/gtk_im_context_wrapper.cc'],
             ['exclude', '^browser/renderer_host/gtk_im_context_wrapper.h'],
             ['exclude', '^browser/renderer_host/render_widget_host.h'],
-            ['exclude', '^browser/renderer_host/render_widget_host_gtk.cc'],
-            ['exclude', '^browser/renderer_host/render_widget_host_view_gtk.cc'],
-            ['exclude', '^browser/renderer_host/render_widget_host_view_gtk.h'],
             ['exclude', '^browser/renderer_host/render_widget_host_view_win.cc'],
             ['exclude', '^browser/renderer_host/render_widget_host_view_win.h'],
             ['exclude', '^browser/renderer_host/render_message_filter_win.cc'],
           ],
         }],
       ],
 }