[iOS] Upstream iOS geolocation code

ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h

Index: ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h
diff --git a/ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h b/ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h
new file mode 100644
index 0000000000000000000000000000000000000000..a5357145e361e189d681cd987760b7a2b40cdfd7
--- /dev/null
+++ b/ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h
@@ -0,0 +1,27 @@
+// 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_CLLOCATION_OMNIBOX_GEOLOCATION_H_
+#define IOS_CHROME_BROWSER_GEOLOCATION_CLLOCATION_OMNIBOX_GEOLOCATION_H_
+
+#import <CoreLocation/CoreLocation.h>
+
+@interface CLLocation (OmniboxGeolocation)
+
+// The elapsed time in seconds to acquire this location. Defaults to 0 if not
+// set.
+@property(nonatomic, assign, setter=cr_setAcquisitionInterval:)
+    NSTimeInterval cr_acquisitionInterval;
+
+// Returns YES if and only if this location is fresh enough to use for an
+// Omnibox query.
+- (BOOL)cr_isFreshEnough;
+
+// Returns YES if and only if this location is old enough to try refreshing the
+// device location.
+- (BOOL)cr_shouldRefresh;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_GEOLOCATION_CLLOCATION_OMNIBOX_GEOLOCATION_H_