Updating trunk VERSION from 1852.0 to 1853.0

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252567 0039d316-1c4b-4281-b951-d872f2087c98
NaCl: Add a README file to explain what the ppapi/nacl_irt/ directory is for

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3787
TEST=none
R=teravest@chromium.org

Review URL: https://codereview.chromium.org/174593002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252569 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252567
SVN changes up to revision 252569
Remove PlatformFile from courgette

BUG=322664
R=tommi@chromium.org

Review URL: https://codereview.chromium.org/166273021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252570 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252570