Check chromium version for device motion issue

[jongmoon]

Description

Currently device motion is branched by browser version which is acquired by egjs-agent. But we can not acquire version of browser engine. For example of Samsung internet Browser, we can get browser name (Samsung Internet) and its version. But We can not get chromium version. And Version of chromium affect on device motion (Related #172, #173)

So we should check it by checking userAgent string directly or change egjs-agent to return browser engine. But we should check it by first one until policy of egjs-agent is decided.