Adds a way to determine id of content handler that created app

components/resource_provider/public/cpp/resource_loader.cc

 // Copyright 2015 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 "components/resource_provider/public/cpp/resource_loader.h"
 
 #include "base/bind.h"
 #include "base/files/file.h"
 #include "mojo/application/public/cpp/connect.h"
 #include "mojo/application/public/interfaces/service_provider.mojom.h"
@@ skipping 11 matching lines @@
   return base::File(platform_handle).Pass();
 }
 }
 
 ResourceLoader::ResourceLoader(mojo::Shell* shell,
                                const std::set<std::string>& paths)
     : loaded_(false), did_block_(false) {
   mojo::URLRequestPtr request(mojo::URLRequest::New());
   request->url = mojo::String::From("mojo:resource_provider");
   mojo::ServiceProviderPtr resource_provider_service_provider;
-  shell->ConnectToApplication(request.Pass(),
-                              GetProxy(&resource_provider_service_provider),
-                              nullptr,
-                              nullptr);
+  shell->ConnectToApplication(
+      request.Pass(), GetProxy(&resource_provider_service_provider), nullptr,
+      nullptr, mojo::Shell::ConnectToApplicationCallback());
   mojo::ConnectToService(resource_provider_service_provider.get(),
                          &resource_provider_);
   std::vector<std::string> paths_vector(paths.begin(), paths.end());
   resource_provider_->GetResources(
       mojo::Array<mojo::String>::From(paths_vector),
       base::Bind(&ResourceLoader::OnGotResources, base::Unretained(this),
                  paths_vector));
 }
 
 ResourceLoader::~ResourceLoader() {
@@ skipping 34 matching lines @@
         new base::File(GetFileFromHandle(resources[i].Pass())));
   }
   loaded_ = true;
 }
 
 void ResourceLoader::OnGotICU(base::File* file, mojo::ScopedHandle handle) {
   *file = GetFileFromHandle(handle.Pass());
 }
 
 }  // namespace resource_provider