Don't install the incognito badge in anything other than a normal browser win...

chrome/browser/cocoa/browser_window_controller.mm

 // 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.
 
 #include <Carbon/Carbon.h>
 
 #include "base/mac_util.h"
 #include "base/scoped_nsdisable_screen_updates.h"
 #import "base/scoped_nsobject.h"
 #include "base/sys_string_conversions.h"
@@ skipping 902 matching lines @@
 - (void)removeBar {
   [self positionOrRemoveBar:NO];
 }
 
 // If the browser is in incognito mode, install the image view to decorate
 // the window at the upper right. Use the same base y coordinate as the
 // tab strip.
 - (void)installIncognitoBadge {
   if (!browser_->profile()->IsOffTheRecord())
     return;
+  // Don't install if we're not a normal browser (ie, a popup).
+  if (![self isNormalWindow])
+    return;
 
   static const float kOffset = 4;
   NSString* incognitoPath = [mac_util::MainAppBundle()
                                 pathForResource:@"otr_icon"
                                          ofType:@"pdf"];
   scoped_nsobject<NSImage> incognitoImage(
       [[NSImage alloc] initWithContentsOfFile:incognitoPath]);
   const NSSize imageSize = [incognitoImage size];
   const NSRect tabFrame = [[self tabStripView] frame];
   NSRect incognitoFrame = tabFrame;
@@ skipping 213 matching lines @@
   NSColor* toolbarButtonBorderColor = toolbarButtonIconColor;
   [theme setValue:toolbarButtonBorderColor
      forAttribute:@"borderColor"
             style:GTMThemeStyleToolBar
             state:YES];
 
   return theme;
 }
 @end