Integrate crosswalk build with chromium-ewk build scripts

Integrate crosswalk build with chromium-ewk build scripts

The goal of the patch is simple, it should be possible to build
crosswalk for both desktop and tizen using the same scripts as we use
for chromium-ewk. The actual change is simple, but we have to take into
account the fact that we do configure chromium sligtly different than
crosswalk does. I does not seems to matter much for crosswalk, but it
means we'll have to test such setup at some point. Still this is the
only way to go if we intent to ship chromium code as a shared library
used by both xwalk binary and chromium-ewk lib at some point.

Change-Id: I212a38093b67ccb2f99b423177ad17599df3f7bf
Signed-off-by: Piotr Tworek <p.tworek@samsung.com>
Signed-off-by: hh4813.kim <hh4813.kim@samsung.com>