Update Panel titlebar text and icon layout when resized on Mac.

chrome/browser/ui/panels/panel_titlebar_view_cocoa.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_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "chrome/browser/ui/cocoa/tracking_area.h"
@@ skipping 48 matching lines @@
 
 - (void)setTitle:(NSString*)newTitle;
 - (void)setIcon:(NSView*)newIcon;
 
 - (NSView*)icon;
 
   // Should be called when size of the titlebar changes.
 - (void)updateCloseButtonLayout;
 - (void)updateIconAndTitleLayout;
 
-// We need to update our look when the Chrome theme changes or window focus
-// changes.
+// Various events that we'll need to redraw our titlebar for.
+- (void)didChangeFrame:(NSNotification*)notification;
 - (void)didChangeTheme:(NSNotification*)notification;
 - (void)didChangeMainWindow:(NSNotification*)notification;
 
 // Helpers to control title drag operation, called from more then one place.
 // TODO(dimich): replace BOOL parameter that we have to explicitly specify at
 // callsites with an enum defined in PanelManager.
 - (void)startDrag;
 - (void)endDrag:(BOOL)cancelled;
 - (void)dragWithDeltaX:(int)deltaX;
 
   // Update the visibility of settings button.
 - (void)updateSettingsButtonVisibility:(BOOL)mouseOverWindow;
 - (void)checkMouseAndUpdateSettingsButtonVisibility;
 
 // Draw Attention methods - change appearance of titlebar to attract user.
 - (void)drawAttention;
 - (void)stopDrawingAttention;
 - (BOOL)isDrawingAttention;
 @end  // @interface PanelTitlebarView
 
 // Methods which are either only for testing, or only public for testing.
 @interface PanelTitlebarViewCocoa(TestingAPI)
 
 - (PanelWindowControllerCocoa*)controller;
 
+- (NSTextField*)title;
+
 // Simulates click on a close button. Used to test panel closing.
 - (void)simulateCloseButtonClick;
 
 // NativePanelTesting support.
 - (void)pressLeftMouseButtonTitlebar;
 - (void)releaseLeftMouseButtonTitlebar;
 - (void)dragTitlebarDeltaX:(double)delta_x
                     deltaY:(double)delta_y;
 - (void)cancelDragTitlebar;
 - (void)finishDragTitlebar;
 
 @end  // @interface PanelTitlebarViewCocoa(TestingAPI)
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_