Remove mojo:: part of mojo::shell:: nested namespace in //shell.

shell/application_manager/identity.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 "shell/application_manager/identity.h"
 
 #include "shell/application_manager/query_util.h"
 
-namespace mojo {
 namespace shell {
 
 Identity::Identity(const GURL& url, const std::string& qualifier)
     : url(GetBaseURLAndQuery(url, nullptr)), qualifier(qualifier) {
 }
 
-// explicit
 Identity::Identity(const GURL& base_url)
     : url(GetBaseURLAndQuery(base_url, nullptr)), qualifier(url.spec()) {
 }
 
 bool Identity::operator<(const Identity& other) const {
   if (url != other.url)
     return url < other.url;
   return qualifier < other.qualifier;
 }
 
 }  // namespace shell
-}  // namespace mojo