[Mac] Port browser action popup test to mac.

chrome/browser/cocoa/extensions/extension_popup_controller.h

 // Copyright (c) 2009 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_COCOA_EXTENSIONS_EXTENSION_POPUP_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_EXTENSIONS_EXTENSION_POPUP_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/scoped_nsobject.h"
@@ skipping 37 matching lines @@
 // |anchoredAt| is expected to be in the screen's coordinates at the bottom
 // center of the browser action button.
 // The actual display of the popup is delayed until the page contents finish
 // loading in order to minimize UI flashing and resizing.
 + (ExtensionPopupController*)showURL:(GURL)url
                            inBrowser:(Browser*)browser
                           anchoredAt:(NSPoint)anchoredAt
                        arrowLocation:(BubbleArrowLocation)arrowLocation;
 @end
 
+@interface ExtensionPopupController(TestingAPI)
+// Returns a weak pointer to the current popup's view.
+- (NSView*)view;
+// Returns the minimum allowed size for an extension popup.
++ (NSSize)minPopupSize;
+// Returns the maximum allowed size for an extension popup.
++ (NSSize)maxPopupSize;
+@end
+
 #endif  // CHROME_BROWSER_COCOA_EXTENSIONS_EXTENSION_POPUP_CONTROLLER_H_