| Index: components/mus/public/cpp/window_observer.h
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| diff --git a/components/mus/public/cpp/window_observer.h b/components/mus/public/cpp/window_observer.h
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| index e974ebc74e064fdb083b8d840ea0b7566ae75a62..9ea3e6dad0c4abe20ab87f1d98acc0ff1b0c662e 100644
 | 
| --- a/components/mus/public/cpp/window_observer.h
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| +++ b/components/mus/public/cpp/window_observer.h
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| @@ -5,6 +5,8 @@
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|  #ifndef COMPONENTS_MUS_PUBLIC_CPP_WINDOW_OBSERVER_H_
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|  #define COMPONENTS_MUS_PUBLIC_CPP_WINDOW_OBSERVER_H_
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|  
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| +#include <stdint.h>
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| +
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|  #include <vector>
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|  
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|  #include "components/mus/public/cpp/window.h"
 | 
| 
 |