Fix up reload button to not flicker, and simplify implementation.

chrome/browser/ui/cocoa/image_button_cell.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/image_button_cell.h"
 
 #include "base/logging.h"
 #import "chrome/browser/themes/theme_service.h"
 #import "chrome/browser/ui/cocoa/image_utils.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
@@ skipping 120 matching lines @@
   ui::ThemeProvider* themeProvider = [[controlView window] themeProvider];
   if (!themeProvider)
     return nil;
 
   return themeProvider->GetNSImageNamed(imageID, true);
 }
 
 - (void)setIsMouseInside:(BOOL)isMouseInside {
   if (isMouseInside_ != isMouseInside) {
     isMouseInside_ = isMouseInside;
-    [[self controlView] setNeedsDisplay:YES];
+    NSView<ImageButton>* control = (NSView<ImageButton>*)[self controlView];

[Scott Hess - ex-Googler, 2011/07/21 00:48:40]

Is this supposed to be static_cast?

[dmac, 2011/07/29 20:01:00]

Done.

+    if ([control respondsToSelector:@selector(mouseInsideStateDidChange:)]) {
+      [control mouseInsideStateDidChange:isMouseInside];
+    }
+    [control setNeedsDisplay:YES];
   }
 }
 
 - (void)mouseEntered:(NSEvent*)theEvent {
   [self setIsMouseInside:YES];
 }
 
 - (void)mouseExited:(NSEvent*)theEvent {
   [self setIsMouseInside:NO];
 }
 
 @end