... by updating eglSwapBuffers() to give up the display lock before
calling surface->swap().

Bug: b/135742693
Test: built locally
Test: presubmit
Test: cts -m CtsMediaTestCases -t android.media.cts.HeifWriterTest#testInputSurface_Grid_Handler
Test: dEQP-GLES3 tests through cherry
Change-Id: I816d30e80077b40e8396bf8d6ae5bb236753e3ea
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/37769Reviewed-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Jason Macnak <natsu@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>