[Tizen] Fixed screen displayed abnormally when playing some size of
html5 mp4 videos.

Such not aligned phenomenon occurs only in special size video in None-X11.
So fix it by re-check and re-aligne HW decoded frame RGBA data.

BUG=XWALK-1781 (https://crosswalk-project.org/jira/browse/XWALK-1781)
Merge pull request #166 from zhang-qing/m5

[Tizen] Fixed screen displayed abnormally when playing some size of html5 mp4 videos.