chromium: Update beta and dev to latest versions.

beta: 37.0.2062.44 -> 37.0.2062.58 (builds fine, tested)
dev:  38.0.2101.0  -> 38.0.2107.3  (builds fine, tested)

Drop patch for fixing angle build for the dev version, because it was
applied upstream already.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>