content: pepper: VideoEncoder: add software encoder support

content/renderer/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/renderer/renderer.gni")
 import("//media/media_options.gni")
 
 source_set("renderer") {
@@ skipping 128 matching lines @@
       "media/webrtc_logging_noop.cc",
     ]
   }
 
   if (enable_plugins) {
     sources += rebase_path(
             content_renderer_gypi_values.private_renderer_plugin_sources,
             ".",
             "//content")
     deps += [
+      "//media/cast:sender",
       "//ppapi/host",
       "//ppapi/proxy",
       "//ppapi/shared_impl",
       "//third_party/libyuv",
     ]
   } else {
     # These files are in the WebRTC list, but also require plugins.
     if (enable_webrtc) {
       sources -= [
         "media/webrtc/video_destination_handler.cc",
@@ skipping 33 matching lines @@
   }
 
   if (enable_media_mojo_renderer) {
     sources += [
       "media/media_renderer_service_provider.cc",
       "media/media_renderer_service_provider.h",
     ]
     deps += [ "//media/mojo/services:renderer_proxy" ]
   }
 }