Get content to build again with aura & component build.

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.
 
 {
   'dependencies': [
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:net',
     '../net/net.gyp:http_server',
     '../ppapi/ppapi_internal.gyp:ppapi_proxy',
@@ skipping 699 matching lines @@
     }],
     ['touchui==1', {
       'sources/': [
         ['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_view_gtk.cc'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_gtk.h'],
       ],
     }],
     ['use_aura==1', {
+      'dependencies': [
+        '../ui/aura/aura.gyp:aura',
+      ],
       '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/native_web_keyboard_event_win.cc'],
         ['exclude', '^browser/renderer_host/render_widget_host.h'],
         ['exclude', '^browser/renderer_host/render_widget_host_view_win.cc'],
@@ skipping 53 matching lines @@
         'browser/renderer_host/java/java_bridge_dispatcher_host_manager.h',
         'browser/renderer_host/java/java_bridge_dispatcher_host.cc',
         'browser/renderer_host/java/java_bridge_dispatcher_host.h',
         'browser/renderer_host/java/java_method.cc',
         'browser/renderer_host/java/java_method.h',
       ],
     }],
   ],
 }