Revert of Mac: Fix rounded corners on browser windows on retina display.

chrome/browser/ui/cocoa/browser_window_controller_private.h

 // Copyright (c) 2012 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_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/presentation_mode_controller.h"
 
@@ skipping 74 matching lines @@
 // y-coordinate, with the given width; returns the new minimum y (above the
 // download shelf). This is safe to call even if there is no download shelf.
 - (CGFloat)layoutDownloadShelfAtMinX:(CGFloat)minX
                                 minY:(CGFloat)minY
                                width:(CGFloat)width;
 
 // Lays out the tab content area in the given frame. If the height changes,
 // sends a message to the renderer to resize.
 - (void)layoutTabContentArea:(NSRect)frame;
 
-// Updates whether the bottom two corners are rounded.
-- (void)updateRoundedBottomCorners;
-
 // Sets the toolbar's height to a value appropriate for the given compression.
 // Also adjusts the bookmark bar's height by the opposite amount in order to
 // keep the total height of the two views constant.
 - (void)adjustToolbarAndBookmarkBarForCompression:(CGFloat)compression;
 
 // Moves views between windows in preparation for fullscreen mode when not using
 // Cocoa's System Fullscreen API.  (System Fullscreen reuses the original window
 // for fullscreen mode, so there is no need to move views around.)  This method
 // does not position views; callers must also call |-layoutSubviews:|.
 - (void)moveViewsForImmersiveFullscreen:(BOOL)fullscreen
@@ skipping 57 matching lines @@
     (fullscreen_mac::SlidingStyle)style;
 
 // Toggles the AppKit Fullscreen API. By default, doing so enters Canonical
 // Fullscreen.
 - (void)enterAppKitFullscreen;
 - (void)exitAppKitFullscreen;
 
 @end  // @interface BrowserWindowController(Private)
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_