SPDY 4: Remove CREDENTIAL from SPDY 4.

This lands server change 54240110 by hkhalil.

R=rch@chromium.org

Review URL: https://codereview.chromium.org/137403004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244797 0039d316-1c4b-4281-b951-d872f2087c98
Files.app: Fix a bug of renaming.

Currently if a file is renamed to an existing file name, it is failed silently
and it looks the file is copied in the file list.  This is caused a name of
variable wrong in the error handler.

BUG=332303
TEST=manually

Review URL: https://codereview.chromium.org/137543005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244798 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244798