Revert 137184 - DragEnter grants both read and navigate permissions to files.

Calling ChildProcessSecurityPolicy::GrantReadFile() ought to be sufficient for the renderer to process files dragged into it. Giving the GrantRequestURL() permission is excessive.

TBR=abarth@chromium.org
BUG=127525
Review URL: https://chromiumcodereview.appspot.com/10397002

TBR=tsepez@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10476003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@140074 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed