Add support for multipage distillation.

components/dom_distiller.gypi

 # Copyright 2013 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.
 
 {
   'conditions': [
     ['android_webview_build == 0', {
       'targets': [
         {
           'target_name': 'dom_distiller_webui',
@@ skipping 94 matching lines @@
             'dom_distiller/core/fake_db.cc',
             'dom_distiller/core/fake_db.h',
             'dom_distiller/core/fake_distiller.cc',
             'dom_distiller/core/fake_distiller.h',
           ],
         },
         {
           'target_name': 'distilled_page_proto',
           'type': 'static_library',
           'sources': [
+            'dom_distiller/core/proto/distilled_article.proto',
             'dom_distiller/core/proto/distilled_page.proto',
           ],
           'variables': {
             'proto_in_dir': 'dom_distiller/core/proto',
             'proto_out_dir': 'components/dom_distiller/core/proto',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
       'conditions': [
@@ skipping 16 matching lines @@
                 'dom_distiller/content/dom_distiller_viewer_source.cc',
                 'dom_distiller/content/dom_distiller_viewer_source.h',
               ],
             },
           ],
         }],
       ],
     }],
   ],
 }