This patch implements a mechanism for more granular link URL permissions (filtering on scheme/host). This fixes the bug that allowed PDFs to have working links to any "chrome://" URLs.

BUG=528505,226927

Review URL: https://codereview.chromium.org/1362433002

Cr-Commit-Position: refs/heads/master@{#351705}
void ChildProcessSecurityPolicyImpl::GrantCopyInto(int child_id,
                                                   const base::FilePath& dir) {
  GrantPermissionsForFile(child_id, dir, COPY_INTO_FILE_GRANT);
}

void ChildProcessSecurityPolicyImpl::GrantCopyInto(int child_id,
                                                   const base::FilePath& dir) {
  GrantPermissionsForFile(child_id, dir, COPY_INTO_FILE_GRANT);
}
