[iOS] Upstream iOS geolocation code

ios/chrome/browser/geolocation/omnibox_geolocation_config.h

+// Copyright 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.
+
+#ifndef IOS_CHROME_BROWSER_GEOLOCATION_OMNIBOX_GEOLOCATION_CONFIG_H_
+#define IOS_CHROME_BROWSER_GEOLOCATION_OMNIBOX_GEOLOCATION_CONFIG_H_
+
+#import <Foundation/Foundation.h>
+
+#import "ios/chrome/browser/updatable_config/updatable_dictionary.h"
+
+class GURL;
+
+// Implements updatable configuration for using geolocation for Omnibox
+// queries.
+@interface OmniboxGeolocationConfig : UpdatableDictionary
+
+// Returns singleton object for this class.
++ (OmniboxGeolocationConfig*)sharedInstance;
+
+// Returns YES if and only if |url| has a domain that is whitelisted for
+// geolocation for Omnibox queries.
+- (BOOL)URLHasEligibleDomain:(const GURL&)url;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_GEOLOCATION_OMNIBOX_GEOLOCATION_CONFIG_H_