FileAPI: Add GrantCreateReadWriteFileSystem to ChildProcessSecurityPolicy
Currently there is no way to grant full permissions of
CREATE_READ_WRITE_FILE_GRANT to isolated filesystems (CreateOverwriteFile
permission is missing). Therefore, files in isolated filesystems could not be
opened from pepper plugins.
(Please see CanOpenFileSystemURLWithPepperFlags for more details)
This change provides GrantCreateReadWriteFileSystem to grant the permission to
isolated filesystems.
BUG=286240
TEST=n/a
Review URL: https://codereview.chromium.org/
47543005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231864 0039d316-1c4b-4281-b951-d872f2087c98