[VD] Support analyze webapp loading performance by RWI

[VD] Support analyze webapp loading performance by RWI

(1)Once WebAPP is launched, just to load "about:blank" firstly,
   and saved WebAPP entry url (index.html)
(2)A popup window with "OK" button to show RWI connection port on TV
  This moment, "about:blank" has been loaded for RWI connection in PC
  also can enable RWI timeline for preparation to record the whole loading
(3)Only user click "OK" button on the popup window,
  then WebAPP entry url (index.html) will be loaded.

Native Patch:
https://review.tizen.org/gerrit/#/c/platform/framework/web/chromium-efl/+/210692/

Change-Id: I2a495659f7761e9d322adee8f19ab95f7eeb27cc
Signed-off-by: liwei <wei90727.li@samsung.com>