Move JoinString to the base namespace

chrome/browser/extensions/api/identity/gaia_web_auth_flow.cc

 // Copyright (c) 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 "chrome/browser/extensions/api/identity/gaia_web_auth_flow.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 37 matching lines @@
   // Additional parameters to pass if device_id is enabled.
   const char kOAuth2AuthorizeFormatDeviceIdAddendum[] =
       "&device_id=%s&"
       "device_type=chrome";
 
   std::vector<std::string> scopes(token_key->scopes.begin(),
                                   token_key->scopes.end());
   std::vector<std::string> client_id_parts;
   base::SplitString(oauth2_client_id, '.', &client_id_parts);
   std::reverse(client_id_parts.begin(), client_id_parts.end());
-  redirect_scheme_ = JoinString(client_id_parts, '.');
+  redirect_scheme_ = base::JoinString(client_id_parts, ".");
   std::string signin_scoped_device_id;
   // profile_ can be nullptr in unittests.
   SigninClient* signin_client =
       profile_ ? ChromeSigninClientFactory::GetForProfile(profile_) : nullptr;
   if (signin_client)
     signin_scoped_device_id = signin_client->GetSigninScopedDeviceId();
 
   redirect_path_prefix_ = base::StringPrintf(kOAuth2RedirectPathFormat,
                                              token_key->extension_id.c_str());
 
   std::string oauth2_authorize_params = base::StringPrintf(
       kOAuth2AuthorizeFormat,
       oauth2_client_id.c_str(),
-      net::EscapeUrlEncodedData(JoinString(scopes, ' '), true).c_str(),
+      net::EscapeUrlEncodedData(base::JoinString(scopes, " "), true).c_str(),
       token_key->extension_id.c_str(),
       redirect_scheme_.c_str(),
       token_key->extension_id.c_str(),
       locale.c_str());
   if (!signin_scoped_device_id.empty()) {
     oauth2_authorize_params += base::StringPrintf(
         kOAuth2AuthorizeFormatDeviceIdAddendum,
         net::EscapeUrlEncodedData(signin_scoped_device_id, true).c_str());
   }
   auth_url_ = GaiaUrls::GetInstance()->oauth2_auth_url().Resolve(
@@ skipping 149 matching lines @@
 }
 
 scoped_ptr<WebAuthFlow> GaiaWebAuthFlow::CreateWebAuthFlow(GURL url) {
   return scoped_ptr<WebAuthFlow>(new WebAuthFlow(this,
                                                  profile_,
                                                  url,
                                                  WebAuthFlow::INTERACTIVE));
 }
 
 }  // namespace extensions