Do not adjust focused input node if node is visible now.

Do not adjust focused input node if node is visible now.

[Title] Do not adjust focused input node if node is visible now.
[Issue#] DCM-1155
[Problem] The focused input node is adjusted to the wrong position when IME is shown in the Web Application.
[Cause] The viewport is resized but contents is not resized right after showing IME
        and unchanged size of contents is used to adjust focused node, so calculated position is wrong.
[Solution] Do not adjust focused input node if node is visible now in order to prevent wrong case of Web Applicaiton.
           We should find the better solution later.

Change-Id: I385cb7f0aa8c9a177dc0a8f228596712c2a6913d