The BSD license of Chromium does not require derivative works to release source-code. However, should they do so, they would be held to the same license. http://code.google.com/chromium/terms.html
Additional terms could be added to require the release of source code, but Google did not do this. That would make it more of a stripped-down Copyleft license (like a simplified GPL) than a pure 3-Clause BSD license.
However, certain components of Chromium are released under other licenses. Particularly, LGPL, GPL, and MPL licenses require that source code be available for the applicable components.
Claiming to be based on Chromium without directly linking specifically
to those applicable portions of the code which still exist in the modified "Dragon" version could be considered an intellectual properties infringement.
Google is not required by the BSD license to release source code. However, they do make it available via Linux repositories, and this link: http://src.chromium.org/viewvc/chrome/
Don't get me wrong, it was a little annoying to find the source for windows, but it's available.
required by these other licenses to release the source code of those components used, as is Comodo, should Comodo still use any
these components released under *PL licenses. Simply linking to or referencing the whole Google Chromium code is not enough; this would be tantamount to claiming that the Dragon product includes all of Chromium and nothing else. The specific, exact code used for these components in Dragon must be made available - whether they are exact copies, or works derived from the MPL/GPL/LGPL components in chromium.