[style] Consistently use "unsigned int" rather than just "unsigned".

BUG=245025

Review URL: https://codereview.chromium.org/147573002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248159 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248159
drive: Stop requesting AboutResource before performing local to drive copy

To make CoypOperation offline capable.

Remove quota check code.
Return GDATA_NO_SPACE from request layer to make it possible to handle quota exceeded error in a different place.

BUG=260539
TEST=unit_tests

Review URL: https://codereview.chromium.org/150633006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248160 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248160