Revert "Revert "WindowSurfaceCGL: unregister the SwapLayer on destruction""

This reverts commit 10277159. Change-Id: I9ecf977845c6ee01d7c3e3791c23673407cfb91a Reviewed-on: https://chromium-review.googlesource.com/322213Reviewed-by: Corentin Wallez <cwallez@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>

Revert "Revert "WindowSurfaceCGL: unregister the SwapLayer on destruction""
70c27e8e · Corentin Wallez · dd46e643 · 70c27e8e
Commit 70c27e8e authored Jan 20, 2016 by Corentin Wallez
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WindowSurfaceCGL.mm src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm +1 -0

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--- a/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm
+++ b/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm
@@ -177,6 +177,7 @@ WindowSurfaceCGL::~WindowSurfaceCGL()
    if (mSwapLayer != nil)
    {
+        [mSwapLayer removeFromSuperlayer];
        [mSwapLayer release];
        mSwapLayer = nil;
    }