Get rid of KeepAlive. Quit shell when all urls run directly by Context are closed.

mojo/shell/run.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/shell/run.h"
 
 #include "base/logging.h"
 #include "mojo/application_manager/application_manager.h"
 #include "mojo/shell/context.h"
-#include "mojo/shell/keep_alive.h"
 
 namespace mojo {
 namespace shell {
 
 class StubServiceProvider : public InterfaceImpl<ServiceProvider> {
  private:
   virtual void ConnectToService(const mojo::String& service_name,
                                 ScopedMessagePipeHandle client_handle)
       MOJO_OVERRIDE {
   }
 };
 
 
 void Run(Context* context, const std::vector<GURL>& app_urls) {
-  KeepAlive keep_alive(context);
-
   if (app_urls.empty()) {
     LOG(ERROR) << "No app path specified";
     return;
   }
 
   for (std::vector<GURL>::const_iterator it = app_urls.begin();
        it != app_urls.end();
        ++it) {
     // TODO(davemoore): These leak...need refs to them.
     StubServiceProvider* stub_sp = new StubServiceProvider;
     ServiceProviderPtr spp;
     BindToProxy(stub_sp, &spp);
 
     context->application_manager()->ConnectToApplication(
         *it, GURL(), spp.Pass());
   }
 }
 
 }  // namespace shell
 }  // namespace mojo