Update gyp files to point to new location of devtools.gyp

BUG=none
R=yurys@chromium.org

Review URL: https://codereview.chromium.org/106603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239209 0039d316-1c4b-4281-b951-d872f2087c98
Files.app: Remove re-scan reqeusets sent while file transfer.

Currently Files.app request to re-scan the drive while file transfer to update
the file list.  But FileOperatonManager triggers 'entry-changed' events for the
purpose and Files.app already handles the events.  We should remove the scan
requests.

BUG=326431
TEST=copy a file on the drive, then observe the file list.

Review URL: https://codereview.chromium.org/107983002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239210 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239210