Move common VideoPacket initialization into VideoEncoderHelper.

remoting/remoting_srcs.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.
 
 {
   'variables': {
     'remoting_base_sources': [
       # Note: sources list duplicated in GN build.
       # See remoting/base/BUILD.gn
       'base/auth_token_util.cc',
@@ skipping 44 matching lines @@
       'codec/audio_encoder_verbatim.cc',
       'codec/audio_encoder_verbatim.h',
       'codec/scoped_vpx_codec.cc',
       'codec/scoped_vpx_codec.h',
       'codec/video_decoder.h',
       'codec/video_decoder_verbatim.cc',
       'codec/video_decoder_verbatim.h',
       'codec/video_decoder_vpx.cc',
       'codec/video_decoder_vpx.h',
       'codec/video_encoder.h',
+      'codec/video_encoder_helper.cc',
+      'codec/video_encoder_helper.h',
       'codec/video_encoder_verbatim.cc',
       'codec/video_encoder_verbatim.h',
       'codec/video_encoder_vpx.cc',
       'codec/video_encoder_vpx.h',
     ],
 
     'remoting_protocol_sources': [
       # Note: sources list duplicated in GN build.
       # See remoting/protocol/BUILD.gn
       'protocol/audio_reader.cc',
@@ skipping 185 matching lines @@
       'client/plugin/pepper_plugin_thread_delegate.h',
       'client/plugin/pepper_port_allocator.cc',
       'client/plugin/pepper_port_allocator.h',
       'client/plugin/pepper_util.cc',
       'client/plugin/pepper_util.h',
       'client/plugin/pepper_view.cc',
       'client/plugin/pepper_view.h',
     ],
   }
 }