First cut at "content handling" support in Mojo.

mojo/shell/dynamic_service_loader_unittest.cc

Index: mojo/shell/dynamic_service_loader_unittest.cc
diff --git a/mojo/shell/dynamic_service_loader_unittest.cc b/mojo/shell/dynamic_service_loader_unittest.cc
index 7cfb74b171976001fb8f3485d0edd8a8a4d960bb..7f0cd14ec08b8d7b285b43426f2a1d875b0d4c8c 100644
--- a/mojo/shell/dynamic_service_loader_unittest.cc
+++ b/mojo/shell/dynamic_service_loader_unittest.cc
@@ -72,10 +72,11 @@ TEST_F(DynamicServiceLoaderTest, DoesNotExist) {
   base::FilePath nonexistent_file(FILE_PATH_LITERAL("nonexistent.txt"));
   GURL url(net::FilePathToFileURL(temp_dir.path().Append(nonexistent_file)));
   MessagePipe pipe;
-  loader_->LoadService(context_.service_manager(), url, pipe.handle0.Pass());
-  loop_.Run();
+  scoped_refptr<ServiceLoader::SimpleLoadServiceCallbacks> callbacks(
+      new ServiceLoader::SimpleLoadServiceCallbacks(pipe.handle0.Pass()));
+  loader_->LoadService(context_.service_manager(), url, callbacks);
   EXPECT_FALSE(state_.runner_was_started);
-  EXPECT_TRUE(state_.runner_was_destroyed);
+  EXPECT_FALSE(state_.runner_was_destroyed);
 }
 
 }  // namespace shell