Make window cycling work even if you change it to something else than cmd-` in sysprefs.

chrome/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2006-2008 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/scoped_nsobject.h"
@@ skipping 24 matching lines @@
   RenderWidgetHostViewMac* renderWidgetHostView_;  // Owned by us.
   BOOL canBeKeyView_;
   BOOL closeOnDeactivate_;
   scoped_ptr<RWHVMEditCommandHelper> editCommand_helper_;
 
   // These are part of the magic tooltip code from WebKit's WebHTMLView:
   id trackingRectOwner_;              // (not retained)
   void *trackingRectUserData_;
   NSTrackingRectTag lastToolTipTag_;
   NSString* toolTip_;
+
+  BOOL ignoreKeyEvents_;
 }
 
 - (void)setCanBeKeyView:(BOOL)can;
 - (void)setCloseOnDeactivate:(BOOL)b;
 - (void)setToolTipAtMousePoint:(NSString *)string;
 
+// When a keyboard event comes back from the renderer, we redispatch it. This
+// makes sure we ignore it if we should receive it during redispatch, instead
+// of sending it to the renderer again.
+- (void)setIgnoreKeyEvents:(BOOL)ignorekeyEvents;
 @end
 
 ///////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewMac
 //
 //  An object representing the "View" of a rendered web page. This object is
 //  responsible for displaying the content of the web page, and integrating with
 //  the Cocoa view system. It is the implementation of the RenderWidgetHostView
 //  that the cross-platform RenderWidgetHost object uses
 //  to display the data.
@@ skipping 141 matching lines @@
   // Factory used to safely scope delayed calls to ShutdownHost().
   ScopedRunnableMethodFactory<RenderWidgetHostViewMac> shutdown_factory_;
 
   // Used for positioning a popup menu.
   BaseView* parent_view_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_