Merge changes from topic "rootless_debug_gles_20181015"

* changes:
  Call down the chain for eglGetError
  Move platform entries init earlier
  Revert "Revert "Rootless Debug for GLES""
  Revert "Revert "Split platform functions from entrypoints""
  Revert "Revert "Rename eglApi.cpp to egl_platform_entries.cpp""