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

Index: chrome/browser/renderer_host/render_widget_host_view_mac.h
diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.h b/chrome/browser/renderer_host/render_widget_host_view_mac.h
index 0e76e95bcef2f50dd6f1d556e48c7d6389f7440a..38edca29023a19ed2721bd078927aeb97ec0f253 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.h
@@ -42,12 +42,18 @@ class RWHVMEditCommandHelper;
   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
 
 ///////////////////////////////////////////////////////////////////////////////