MediaStreamRecorder: enable in Android (including linking libwebm)

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 142 matching lines @@
       "media/media_stream_track.cc",
       "media/media_stream_track.h",
     ]
   }
 
   if (enable_webrtc) {
     sources += rebase_path(
             content_renderer_gypi_values.private_renderer_webrtc_sources,
             ".",
             "//content")
-    if (is_android) {
-      sources -= [
-        "media/media_recorder_handler.cc",
-        "media/media_recorder_handler.h",
-        "media/video_track_recorder.cc",
-        "media/video_track_recorder.h",
-      ]
-    }
 
     deps += [
       "//crypto",
       "//third_party/libjingle:libjingle_webrtc",
       "//third_party/libjingle:libpeerconnection",
       "//third_party/libjingle:libstunprober",
       "//third_party/webrtc/modules/audio_device",
       "//third_party/webrtc/modules/audio_processing",
     ]
   } else {
@@ skipping 53 matching lines @@
 
   if (enable_webvr) {
     sources += [
       "vr/vr_dispatcher.cc",
       "vr/vr_dispatcher.h",
       "vr/vr_type_converters.cc",
       "vr/vr_type_converters.h",
     ]
   }
 }