Add ContentVideoViewOverlay to AVDA.

media/base/android/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/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 
   # APK targets that depend on this, either directly or indirectly, should also
   # depend on :media_java to get the corresponding Java classes.
   source_set("android") {
     sources = [
       "android_cdm_factory.cc",
       "android_cdm_factory.h",
+      "android_overlay.cc",
+      "android_overlay.h",
       "media_client_android.cc",
       "media_client_android.h",
       "media_codec_bridge.h",
       "media_codec_bridge_impl.cc",
       "media_codec_bridge_impl.h",
       "media_codec_direction.h",
       "media_codec_loop.cc",
       "media_codec_loop.h",
       "media_codec_util.cc",
       "media_codec_util.h",
@@ skipping 97 matching lines @@
       "java/src/org/chromium/media/CodecProfileLevelList.java",
       "java/src/org/chromium/media/MediaCodecBridge.java",
       "java/src/org/chromium/media/MediaCodecUtil.java",
       "java/src/org/chromium/media/MediaDrmBridge.java",
       "java/src/org/chromium/media/MediaPlayerBridge.java",
       "java/src/org/chromium/media/MediaPlayerListener.java",
       "java/src/org/chromium/media/MediaServerCrashListener.java",
     ]
   }
 }