Center permission bubble if location bar is hidden in MacOS.

chrome/browser/ui/cocoa/website_settings/permission_bubble_cocoa.h

 // Copyright 2014 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 CHROME_BROWSER_UI_COCOA_PERMISSION_BUBBLE_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_PERMISSION_BUBBLE_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "chrome/browser/ui/cocoa/info_bubble_view.h"
 #include "chrome/browser/ui/website_settings/permission_bubble_view.h"
 #include "content/public/browser/web_contents.h"
 
 #ifdef __OBJC__
 @class PermissionBubbleController;
 #else
 class PermissionBubbleController;
 #endif
 
 class PermissionBubbleCocoa : public PermissionBubbleView {
@@ skipping 15 matching lines @@
   // Returns the point, in screen coordinates, to which the bubble's arrow
   // should point.
   NSPoint GetAnchorPoint();
 
   // Returns the NSWindow containing the bubble.
   NSWindow* window();
 
   // Change the parent window to be used the next time the bubble is shown.
   void SwitchParentWindow(NSWindow* parent);
 
+  bool HasOmnibar();

[groby-ooo-7-16, 2015/03/16 22:09:35]

Why is this public?

[hcarmona, 2015/03/30 20:44:28]

Doesn't need to be public. Made protected.
Or would private + friend be preferred?

+  info_bubble::BubbleArrowLocation GetArrowLocation();
+
 private:
   NSWindow* parent_window_;  // Weak.
   Delegate* delegate_;  // Weak.
 
   // Cocoa-side UI controller for the bubble.  Weak, as it will close itself.
   PermissionBubbleController* bubbleController_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionBubbleCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_PERMISSION_BUBBLE_COCOA_H_