Add Mojo CDM Service.

media/mojo/services/BUILD.gn

Index: media/mojo/services/BUILD.gn
diff --git a/media/mojo/services/BUILD.gn b/media/mojo/services/BUILD.gn
index da4711e99dd1e696b7cce14ee74cce431dee01f2..0a028f8fe7b71e2045a1bebc999f53169ef931a1 100644
--- a/media/mojo/services/BUILD.gn
+++ b/media/mojo/services/BUILD.gn
@@ -27,6 +27,46 @@ source_set("lib") {
   ]
 }
 
+source_set("mojo_cdm_lib") {
+  deps = [
+    ":lib",
+    "//base",
+    "//media",
+    "//media/mojo/interfaces",
+    "//mojo/public/interfaces/application",
+    "//mojo/common",
+    "//mojo/environment:chromium",
+    "//mojo/public/c/system:for_component",
+    "//mojo/public/cpp/application",
+  ]
+
+  sources = [
+    "mojo_cdm.cc",
+    "mojo_cdm.h",
+  ]
+}
+
+source_set("cdm_service") {
+  deps = [
+    ":lib",
+    "//base",
+    "//media",
+    "//media/mojo/interfaces",
+    "//mojo/public/interfaces/application",
+    "//mojo/common",
+    "//mojo/environment:chromium",
+    "//mojo/public/c/system:for_component",
+    "//mojo/public/cpp/application",
+  ]
+
+  sources = [
+    "mojo_cdm_promise.cc",
+    "mojo_cdm_promise.h",
+    "mojo_cdm_service.cc",
+    "mojo_cdm_service.h",
+  ]
+}
+
 # mojo media::Renderer proxy (to a renderer_app) implementation.
 source_set("renderer_impl_lib") {
   deps = [