Add support for swapping feeds in Android AppRTCMobile.

webrtc/examples/BUILD.gn

 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../webrtc.gni")
 if (is_android) {
@@ skipping 46 matching lines @@
       ":AppRTCMobile_javalib",
       ":AppRTCMobile_resources",
       "//base:base_java",
       "//webrtc/base:base_java",
     ]
 
     shared_libraries = [ "//webrtc/sdk/android:libjingle_peerconnection_so" ]
   }
 
   android_library("AppRTCMobile_javalib") {
+    android_manifest = "androidapp/AndroidManifest.xml"

[sakal, 2017/02/10 08:38:04]

This was required. Otherwise linter complains about supportsRtl tag.

+
     java_files = [
       "androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java",
       "androidapp/src/org/appspot/apprtc/AppRTCBluetoothManager.java",
       "androidapp/src/org/appspot/apprtc/AppRTCClient.java",
       "androidapp/src/org/appspot/apprtc/AppRTCProximitySensor.java",
       "androidapp/src/org/appspot/apprtc/CallActivity.java",
       "androidapp/src/org/appspot/apprtc/CallFragment.java",
       "androidapp/src/org/appspot/apprtc/CaptureQualityController.java",
       "androidapp/src/org/appspot/apprtc/ConnectActivity.java",
       "androidapp/src/org/appspot/apprtc/CpuMonitor.java",
@@ skipping 545 matching lines @@
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "../p2p:libstunprober",
       "../p2p:rtc_p2p",
       "../system_wrappers:field_trial_default",
     ]
   }
 }