API proposal for chrome.app.window to intercept all keys.

extensions/browser/app_window/native_app_window.h

Index: extensions/browser/app_window/native_app_window.h
diff --git a/extensions/browser/app_window/native_app_window.h b/extensions/browser/app_window/native_app_window.h
index 2c37fe0e801ddd647d5f7a6cc21a58addf360532..bb7e467e6b96a5f5119fc05532ad70545840c2a0 100644
--- a/extensions/browser/app_window/native_app_window.h
+++ b/extensions/browser/app_window/native_app_window.h
@@ -54,6 +54,10 @@ class NativeAppWindow : public ui::BaseWindow,
   // window is restored to the default shape.
   virtual void UpdateShape(scoped_ptr<SkRegion> region) = 0;
 
+  // Set whether the window should receive all keyboard events including task
+  // switching keys.
+  virtual void SetInterceptAllKeys(bool want_all_keys) = 0;
+
   // Allows the window to handle unhandled keyboard messages coming back from
   // the renderer.
   virtual void HandleKeyboardEvent(