FullscreenExitBubble temp UI for Mac.

chrome/browser/ui/cocoa/browser_window_controller_private.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 CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_
 #pragma once
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
@@ skipping 25 matching lines @@
 
 // Repositions the window's subviews. From the top down: toolbar, normal
 // bookmark bar (if shown), infobar, NTP detached bookmark bar (if shown),
 // content area, download shelf (if any).
 - (void)layoutSubviews;
 
 // Find the total height of the floating bar (in presentation mode). Safe to
 // call even when not in presentation mode.
 - (CGFloat)floatingBarHeight;
 
+// Shows the informational "how to exit fullscreen" bubble.
+- (void)showFullscreenExitBubbleIfNecessary;
+- (void)destroyFullscreenExitBubbleIfNecessary;
+
 // Lays out the presentation mode toggle button at the top right corner of the
 // overlay.  Creates the button if needed, and removes it if it is not needed.
 // This method is safe to call on all OS versions.
 - (void)layoutPresentationModeToggleAtOverlayMaxX:(CGFloat)maxX
                                       overlayMaxY:(CGFloat)maxY;
 
 // Lays out the tab strip at the given maximum y-coordinate, with the given
 // width, possibly for fullscreen mode; returns the new maximum y (below the
 // tab strip). This is safe to call even when there is no tab strip.
 - (CGFloat)layoutTabStripAtMaxY:(CGFloat)maxY
@@ skipping 102 matching lines @@
 
 // Allows/prevents bar visibility locks and releases from updating the visual
 // state. Enabling makes changes instantaneously; disabling cancels any
 // timers/animation.
 - (void)enableBarVisibilityUpdates;
 - (void)disableBarVisibilityUpdates;
 
 @end  // @interface BrowserWindowController(Private)
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_PRIVATE_H_