Move JoinString to the base namespace

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 2012 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/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 1213 matching lines @@
     // The field trial is configured to force users that specify the
     // blink-settings flag into a group with no params, and we return
     // above if no params were specified, so it's an error if we reach
     // this point.
     LOG(WARNING) << "Received field trial params, "
                     "but blink-settings switch already specified.";
     return;
   }
 
   command_line->AppendSwitchASCII(switches::kBlinkSettings,
-                                  JoinString(blink_settings, ','));
+                                  base::JoinString(blink_settings, ","));
 }
 
 }  // namespace
 
 void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
     base::CommandLine* command_line,
     int child_process_id) {
 #if defined(OS_MACOSX)
   scoped_ptr<metrics::ClientInfo> client_info =
       GoogleUpdateSettings::LoadMetricsClientInfo();
@@ skipping 1302 matching lines @@
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)
 
 }  // namespace chrome