Add support for swapping feeds in Android AppRTCMobile.

webrtc/examples/BUILD.gn

Index: webrtc/examples/BUILD.gn
diff --git a/webrtc/examples/BUILD.gn b/webrtc/examples/BUILD.gn
index 3ee9ae5e9fd3648c1f7a8c35d2f4e50dc6e0af3e..59842fc524532742cb85c3bd98b9e89ae45f90e3 100644
--- a/webrtc/examples/BUILD.gn
+++ b/webrtc/examples/BUILD.gn
@@ -64,6 +64,8 @@ if (is_android) {
   }
 
   android_library("AppRTCMobile_javalib") {
+    android_manifest = "androidapp/AndroidManifest.xml"
+
     java_files = [
       "androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java",
       "androidapp/src/org/appspot/apprtc/AppRTCBluetoothManager.java",
@@ -77,7 +79,6 @@ if (is_android) {
       "androidapp/src/org/appspot/apprtc/DirectRTCClient.java",
       "androidapp/src/org/appspot/apprtc/HudFragment.java",
       "androidapp/src/org/appspot/apprtc/PeerConnectionClient.java",
-      "androidapp/src/org/appspot/apprtc/PercentFrameLayout.java",
       "androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java",
       "androidapp/src/org/appspot/apprtc/SettingsActivity.java",
       "androidapp/src/org/appspot/apprtc/SettingsFragment.java",