Fix crash about GL initialization during layout tests on Android
Fix crash about GL initialization during layout tests on Android

Android layout tests use osmesa.

Initialize dynamic GL bindings for osmesa.

BUG=439457

Review URL: https://codereview.chromium.org/1216693004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#336952}

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