Implement ChildProcessSecurityPolicy::HasPermissionsForFileSystemFile()

In content/ layer:
- Add CPSP::HasPermissionsForFileSystemFile() for central
  FileSystem permission check.
- Replace all permission check code for FileSystem files with the
  newly added CPSP method

In webkit/browser/fileapi layer:
- Each MountPointProvider's GetPermissionPolicy() is replaced with a
  central static FileSystemContext::GetPermissionPolicy() method.
  Now the permission policy is statically defined for each type and
  used by CPSP.  Some FS-specific security checks are moved into
  each FS's private implementation.
- For SandboxMountPointProvider: moved some API-specific validity
  check code into a private IsAcessValid() method.
- For CrosMountPointProvider:  IsAccessAllowed() method is still called
  every time when a new FileSystemOperation is created, but doesn't
  participate the CPSP's permission check.

BUG=174550
TEST=ChildProcessSecurityPolicyTest::FileSystemFilePermissions
R=aedla@chromium.org, darin@chromium.org, tbarzic@chromium.org, tsepez@chromium.org

Review URL: https://codereview.chromium.org/12310099

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209418 0039d316-1c4b-4281-b951-d872f2087c98

0 files changed, 0 insertions, 0 deletions