Use a direct include of strings headers in content/browser/, part 1.

content/browser/geolocation/location_provider.h

 // 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.
 
 // A location provider provides position information from a particular source
 // (GPS, network etc).
 //
 // This file declares a base class to be used by all location providers.
 // Primarily, this class declares interface methods to be implemented by
 // derived classes.
 
 #ifndef CONTENT_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_
 #define CONTENT_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_
 
 #include <map>
 
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/threading/non_thread_safe.h"
 #include "content/common/content_export.h"
 
 class GURL;
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace content {
@@ skipping 68 matching lines @@
 CONTENT_EXPORT LocationProviderBase* NewNetworkLocationProvider(
     AccessTokenStore* access_token_store,
     net::URLRequestContextGetter* context,
     const GURL& url,
     const string16& access_token);
 LocationProviderBase* NewSystemLocationProvider();
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_