Fix IPC fuzzer build.

tools/ipc_fuzzer/message_lib/message_lib.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'message_lib_deps': [
       '../../../base/base.gyp:base',
       '../../../chrome/chrome.gyp:common',
+      '../../../components/components.gyp:pdf_common',
       '../../../components/nacl.gyp:nacl_common',
       '../../../content/content.gyp:content_child',
       '../../../ipc/ipc.gyp:ipc',
       '../../../media/cast/cast.gyp:cast_net',
       '../../../ppapi/ppapi_internal.gyp:ppapi_ipc',
       '../../../remoting/remoting.gyp:remoting_host',
       '../../../skia/skia.gyp:skia',
       '../../../third_party/libjingle/libjingle.gyp:libjingle',
       '../../../third_party/mt19937ar/mt19937ar.gyp:mt19937ar',
       '../../../third_party/WebKit/public/blink.gyp:blink',
@@ skipping 22 matching lines @@
       ],
       'include_dirs': [
         '../../..',
       ],
       'defines': [
         'USE_CUPS',
       ],
     },
   ],
 }