Revert 223758 "Initial submit of ChromeDebug extension. "

Revert 223758 "Initial submit of ChromeDebug extension.  "
Breaks license check.

> Initial submit of ChromeDebug extension.  
> 
> This is a re-upload of a previous patch due to some cs files 
> breaking git's copy/rename detection, so a new issue had to be 
> created and uploaded with --no-find-copies.
> 
> New to this upload is the addition of a LICENSE file (which 
> is displayed when you try to install the extension), as well 
> as copyright headers in source files.
> 
> BUG=0
> 
> Review URL: https://chromiumcodereview.appspot.com/23480085

TBR=zturner@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=223797

[Bei Zhang, 2013-09-18 04:28:59]

Committed patchset #1 manually as r223797.