remove libwebm third_party dependency

remoting/remoting_client.gypi

 # Copyright 2014 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': [
     {
       # GN version: //remoting/client/plugin
       'target_name': 'remoting_client_plugin',
       'type': 'static_library',
@@ skipping 24 matching lines @@
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
       'defines': [
         'VERSION=<(version_full)',
       ],
       'dependencies': [
         'remoting_base',
         'remoting_protocol',
         '../third_party/libyuv/libyuv.gyp:libyuv',
         '../third_party/webrtc/modules/modules.gyp:desktop_capture',
-        '../third_party/libwebm/libwebm.gyp:libwebm',
       ],
       'sources': [
         '<@(remoting_client_sources)',
       ],
     },  # end of target 'remoting_client'
 
     {
       'target_name': 'remoting_webapp_html',
       'type': 'none',
       'actions': [
@@ skipping 95 matching lines @@
         }, {
           'variables': {
             'webapp_type': 'v2',
           },
         }],
       ],
       'includes': [ 'remoting_webapp.gypi', ],
     },  # end of target 'remoting_webapp_v2'
   ],  # end of targets
 }