Set max-height of video area in media document as 100%

Set max-height of video area in media document as 100%

[Title] Set max-height of video area in media document as 100%
[Issue#] n/a
[Problem] Some video's height in media document is larger than screen on landscape mode.
[Cause] Width of video area in media document is set as 100%.
        So, height of video can be larger than screen depending on video resolution.
[Solution] Set max-height of video area in media document as 100%
           Video will be shown as the maximum size in render area(width = 100%, max-height = 100%)

Change-Id: I3454a933b820ba2b83c52337212f9e111bbb9d96