Fix signed to unsigned integer conversion warning in EGLWindow.h Change-Id: I7b4249e04c8fb76b60b4c837266b144fbd64cbf6 Reviewed-on: https://chromium-review.googlesource.com/269128 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>