media: Rename media_mojo_shell_unittests to media_service_unittests

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 dd57bde0947e9b7e1a819995d77beb26b020d876..a27ce33b5561a16746e1a58dc57e2ea55886ee51 100644
--- a/media/mojo/services/BUILD.gn
+++ b/media/mojo/services/BUILD.gn
@@ -150,11 +150,11 @@ service("media") {
   ]
 }
 
-test("media_mojo_shell_unittests") {
+test("media_service_unittests") {
   testonly = true
 
   sources = [
-    "media_mojo_unittest.cc",
+    "media_service_unittest.cc",
   ]
 
   deps = [
@@ -181,7 +181,7 @@ service_manifest("media_manifest") {
 }
 
 service_manifest("test_manifest") {
-  name = "media_mojo_shell_unittests"
+  name = "media_service_unittests"
   source = "test_manifest.json"
 }