98771a083f
This is the first step toward removing blocking IO calls from the implementation of the SecurityContext API. Using a buffer rather than a file name API will probably be needed for implementing SecurityContext and SecureSocket with platform specific built-in APIs on iOS/Mac/Windows rather than BoringSSL. related #8227 R=whesse@google.com Review URL: https://codereview.chromium.org/1616073004 .