clang-format //shell and add a PRESUBMIT.py to keep it clang-formatted.

shell/application_manager/application_manager.h

 // Copyright 2014 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 SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_
 #define SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_
 
 #include <map>
 #include <set>
 
@@ skipping 90 matching lines @@
     INCLUDE_DEFAULT_LOADER,
     DONT_INCLUDE_DEFAULT_LOADER,
   };
 
   class ContentHandlerConnection;
 
   typedef std::map<std::string, ApplicationLoader*> SchemeToLoaderMap;
   typedef std::map<GURL, ApplicationLoader*> URLToLoaderMap;
   typedef std::map<GURL, ShellImpl*> URLToShellImplMap;
   typedef std::map<GURL, ContentHandlerConnection*> URLToContentHandlerMap;
-  typedef std::map<GURL, std::vector<std::string> > URLToArgsMap;
+  typedef std::map<GURL, std::vector<std::string>> URLToArgsMap;
 
   void ConnectToApplicationImpl(const GURL& requested_url,
                                 const GURL& resolved_url,
                                 const GURL& requestor_url,
                                 InterfaceRequest<ServiceProvider> services,
                                 ServiceProviderPtr exposed_services,
                                 ApplicationLoader* loader);
 
   ShellImpl* GetShellImpl(const GURL& url);
 
@@ skipping 29 matching lines @@
   URLToArgsMap url_to_args_;
 
   base::WeakPtrFactory<ApplicationManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationManager);
 };
 
 }  // namespace mojo
 
 #endif  // SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_