Add a sky media service to make it possible to play a sound.

sky/services/media/BUILD.gn

Index: sky/services/media/BUILD.gn
diff --git a/sky/services/intents/BUILD.gn b/sky/services/media/BUILD.gn
similarity index 70%
copy from sky/services/intents/BUILD.gn
copy to sky/services/media/BUILD.gn
index 50470973cef2ad45a4a5a00c84b30acaaf54af32..f6b701342a28ff83c7661a2d6bf16ed01713e62a 100644
--- a/sky/services/intents/BUILD.gn
+++ b/sky/services/media/BUILD.gn
@@ -6,20 +6,24 @@ import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
-group("intents") {
+group("media") {
   testonly = true
 
   deps = [
-    ":intents_lib",
+    ":media_lib",
     ":interfaces",
   ]
 }
 
-android_library("intents_lib") {
-  java_files = [ "src/org/domokit/intents/ActivityManagerImpl.java" ]
+android_library("media_lib") {
+  java_files = [
+    "src/org/domokit/media/MediaPlayerImpl.java",
+    "src/org/domokit/media/MediaServiceImpl.java",
+  ]
 
   deps = [
     "//base:base_java",
+    "//mojo/java",
     "//mojo/public/java:bindings",
     "//mojo/public/java:system",
     ":interfaces_java",
@@ -28,6 +32,6 @@ android_library("intents_lib") {
 
 mojom("interfaces") {
   sources = [
-    "intents.mojom",
+    "media.mojom",
   ]
 }