Change primordial pipes to ShellClient

mojo/shell/public/cpp/application_runner.h

Index: mojo/shell/public/cpp/application_runner.h
diff --git a/mojo/shell/public/cpp/application_runner.h b/mojo/shell/public/cpp/application_runner.h
index 3863923e30fd20f56f3263e68c5e3a595a195821..2fb28a2b24bff3a337b27bae941b7abfdc3abe51 100644
--- a/mojo/shell/public/cpp/application_runner.h
+++ b/mojo/shell/public/cpp/application_runner.h
@@ -27,7 +27,7 @@ class ShellConnection;
 // ultimately Quit().
 class ApplicationRunner {
  public:
-  // Takes ownership of |delegate|.
+  // Takes ownership of |client|.
   explicit ApplicationRunner(ShellClient* client);
   ~ApplicationRunner();
 
@@ -53,6 +53,10 @@ class ApplicationRunner {
   // requests from others.
   void DestroyShellConnection();
 
+  // Allows the caller to explicitly quit the application. Must be called from
+  // the thread which created the ApplicationRunner.
+  void Quit();
+
  private:
   scoped_ptr<ShellConnection> connection_;
   scoped_ptr<ShellClient> client_;