DialogSurfaceManager implementation.

media/base/android/BUILD.gn

Index: media/base/android/BUILD.gn
diff --git a/media/base/android/BUILD.gn b/media/base/android/BUILD.gn
index bc89ae0a591dce0feead4374c589ba8890b8b4de..d014b894b13fd05422273943b266ec3277cf32e9 100644
--- a/media/base/android/BUILD.gn
+++ b/media/base/android/BUILD.gn
@@ -10,6 +10,17 @@ import("//media/media_options.gni")
 
 assert(is_android)
 
+android_aidl("common_aidl") {
+  interface_file = "java/src/org/chromium/media/common.aidl"
+  import_include = "java/src"
+  sources = [
+    "java/src/org/chromium/media/IDialogSurface.aidl",
+    "java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl",
+    "java/src/org/chromium/media/IDialogSurfaceCallback.aidl",
+    "java/src/org/chromium/media/IDialogSurfaceManager.aidl",
+  ]
+}
+
 source_set("android") {
   sources = [
     "access_unit_queue.cc",
@@ -23,6 +34,9 @@ source_set("android") {
     "demuxer_android.h",
     "demuxer_stream_player_params.cc",
     "demuxer_stream_player_params.h",
+    "dialog_surface.h",
+    "dialog_surface_manager.cc",
+    "dialog_surface_manager.h",
     "media_client_android.cc",
     "media_client_android.h",
     "media_codec_bridge.cc",
@@ -119,6 +133,7 @@ generate_jni("media_jni_headers") {
   sources = [
     "java/src/org/chromium/media/AudioManagerAndroid.java",
     "java/src/org/chromium/media/AudioRecordInput.java",
+    "java/src/org/chromium/media/DialogSurfaceManagerWrapper.java",
     "java/src/org/chromium/media/MediaCodecBridge.java",
     "java/src/org/chromium/media/MediaCodecUtil.java",
     "java/src/org/chromium/media/MediaDrmBridge.java",
@@ -131,11 +146,16 @@ generate_jni("media_jni_headers") {
 android_library("media_java") {
   deps = [
     "//base:base_java",
+    "//media/base/android:common_aidl",
   ]
 
+  srcjar_deps = [ ":common_aidl" ]
+
   java_files = [
     "java/src/org/chromium/media/AudioManagerAndroid.java",
     "java/src/org/chromium/media/AudioRecordInput.java",
+    "java/src/org/chromium/media/DialogSurfaceManager.java",
+    "java/src/org/chromium/media/DialogSurfaceManagerWrapper.java",
     "java/src/org/chromium/media/MediaCodecBridge.java",
     "java/src/org/chromium/media/MediaCodecUtil.java",
     "java/src/org/chromium/media/MediaDrmBridge.java",