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

content/browser/mojo/mojo_shell_context.h

 // 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.
 
 #ifndef CONTENT_BROWSER_MOJO_MOJO_SHELL_CONTEXT_H_
 #define CONTENT_BROWSER_MOJO_MOJO_SHELL_CONTEXT_H_
 
 #include <map>
 
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
+#include "mojo/application/public/interfaces/shell.mojom.h"
 #include "mojo/shell/application_manager.h"
 
 class GURL;
 
 namespace mojo {
 class ApplicationDelegate;
 }
 
 namespace content {
 
@@ skipping 10 matching lines @@
 
   // Connects an application at |url| and gets a handle to its exposed services.
   // This is only intended for use in browser code that's not part of some Mojo
   // application. May be called from any thread. |requestor_url| is given to
   // the target application as the requestor's URL upon connection.
   static void ConnectToApplication(
       const GURL& url,
       const GURL& requestor_url,
       mojo::InterfaceRequest<mojo::ServiceProvider> request,
       mojo::ServiceProviderPtr exposed_services,
-      const mojo::shell::CapabilityFilter& filter);
+      const mojo::shell::CapabilityFilter& filter,
+      const mojo::Shell::ConnectToApplicationCallback& callback);
 
   static void SetApplicationsForTest(const StaticApplicationMap* apps);
 
  private:
   class Proxy;
   friend class Proxy;
 
   void ConnectToApplicationOnOwnThread(
       const GURL& url,
       const GURL& requestor_url,
       mojo::InterfaceRequest<mojo::ServiceProvider> request,
       mojo::ServiceProviderPtr exposed_services,
-      const mojo::shell::CapabilityFilter& filter);
+      const mojo::shell::CapabilityFilter& filter,
+      const mojo::Shell::ConnectToApplicationCallback& callback);
 
   // mojo::shell::ApplicationManager::Delegate:
   GURL ResolveMappings(const GURL& url) override;
   GURL ResolveMojoURL(const GURL& url) override;
   bool CreateFetcher(
       const GURL& url,
       const mojo::shell::Fetcher::FetchCallback& loader_callback) override;
 
   static base::LazyInstance<scoped_ptr<Proxy>> proxy_;
 
   scoped_ptr<mojo::shell::ApplicationManager> application_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoShellContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MOJO_MOJO_SHELL_CONTEXT_H_