Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/omnibox/omnibox_popup_positioner.h

+// Copyright (c) 2011 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_UI_OMNIBOX_OMNIBOX_POPUP_POSITIONER_H_
+#define IOS_CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_POPUP_POSITIONER_H_
+
+#import <UIKit/UIKit.h>
+
+@protocol OmniboxPopupPositioner
+
+// Returns the view the popup is anchored next to. Callers are responsible for
+// adding the popup as a sibling either above or below this view.
+- (UIView*)popupAnchorView;
+
+// Returns the popup's frame, in the coordinate system of the view returned by
+// |popupView|'s superview.  If |height| is too large for the screen, the frame
+// may be shortened.
+- (CGRect)popupFrame:(CGFloat)height;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_POPUP_POSITIONER_H_