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

chrome/browser/cocoa/chrome_event_processing_window.h

Index: chrome/browser/cocoa/chrome_event_processing_window.h
diff --git a/chrome/browser/cocoa/chrome_event_processing_window.h b/chrome/browser/cocoa/chrome_event_processing_window.h
index b3cc1164609adf24c8166a20c3e24d15efefe020..59241b728a18e3eee8061a11d7f53e75acd84a28 100644
--- a/chrome/browser/cocoa/chrome_event_processing_window.h
+++ b/chrome/browser/cocoa/chrome_event_processing_window.h
@@ -12,7 +12,20 @@
 // Override NSWindow to access unhandled keyboard events (for command
 // processing); subclassing NSWindow is the only method to do
 // this.
-@interface ChromeEventProcessingWindow : NSWindow
+@interface ChromeEventProcessingWindow : NSWindow {
+ @private
+  BOOL redispatchingEvent_;
+}
+
+// Returns |YES| if |event| has been shortcircuited and should not be processed
+// further.
+- (BOOL)shortcircuitEvent:(NSEvent*)event;
+
+// Sends an event to |NSApp sendEvent:|, but also makes sure that it's not
+// short-circuited to the RWHV. This is used to send keyboard events to the menu
+// and the cmd-` handler if a keyboard event comes back unhandled from the
+// renderer.
+- (void)redispatchEvent:(NSEvent*)event;
 
 // See global_keyboard_shortcuts_mac.h for details on the next two functions.