Remove gpu/demos/demos.gyp from build/all.gyp.

build/all.gyp

 # Copyright (c) 2012 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': 'All',
       'type': 'none',
       'xcode_create_dependents_test_runner': 1,
       'dependencies': [
         'some.gyp:*',
         '../base/base.gyp:*',
         '../chrome/browser/sync/tools/sync_tools.gyp:*',
         '../chrome/chrome.gyp:*',
         '../content/content.gyp:*',
         '../crypto/crypto.gyp:*',
         '../ui/ui.gyp:*',
         '../gpu/gpu.gyp:*',
-        '../gpu/demos/demos.gyp:*',
         '../gpu/tools/tools.gyp:*',
         '../ipc/ipc.gyp:*',
         '../jingle/jingle.gyp:*',
         '../media/media.gyp:*',
         '../net/net.gyp:*',
         '../ppapi/ppapi.gyp:*',
         '../ppapi/ppapi_internal.gyp:*',
         '../printing/printing.gyp:*',
         '../sdch/sdch.gyp:*',
         '../skia/skia.gyp:*',
@@ skipping 587 matching lines @@
                 '../chrome/chrome.gyp:ui_tests',
                 '../ui/views/views.gyp:views_unittests',
               ],
             }],
           ],
         },
       ],  # targets
     }], # "use_aura==1"
   ], # conditions
 }