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 956375b10c541a26249d5047b2ac2c36b796835b..57f35b026ca8131f4f9d42d1c647eb84920661d6 100644
--- a/media/base/android/BUILD.gn
+++ b/media/base/android/BUILD.gn
@@ -51,10 +51,24 @@ source_set("anywhere_unit_tests") {
 if (is_android) {
   import("//build/config/android/rules.gni")
 
+  android_aidl("common_aidl") {
+    interface_file = "java/src/org/chromium/media/common.aidl"
+    import_include = "java/src"
+    sources = [
+      "java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl",
+      "java/src/org/chromium/media/IDialogSurfaceCallback.aidl",
+      "java/src/org/chromium/media/IDialogSurfaceHolder.aidl",
+      "java/src/org/chromium/media/IDialogSurfaceManager.aidl",
+    ]
+  }
+
   source_set("android") {
     sources = [
       "android_cdm_factory.cc",
       "android_cdm_factory.h",
+      "dialog_surface_holder.h",
+      "dialog_surface_manager.cc",
+      "dialog_surface_manager.h",
       "media_client_android.cc",
       "media_client_android.h",
       "media_codec_util.cc",
@@ -86,6 +100,7 @@ if (is_android) {
       "//media:media_implementation",
     ]
     deps = [
+      ":common_aidl",
       ":media_jni_headers",
       "//media:media_features",
       "//media:shared_memory_support",
@@ -120,6 +135,7 @@ if (is_android) {
     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",
@@ -131,12 +147,17 @@ if (is_android) {
 
   android_library("media_java") {
     deps = [
+      ":common_aidl",
       "//base:base_java",
     ]
 
+    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/DialogSurfaceManagerImpl.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",