NaCl cleanup: Stop linking the old, glibc-based Non-SFI runtime into nacl_helper
This reduces the binary size a lot:
Before:
$ size out/Release/nacl_helper
text data bss dec hex filename
6667042 234376 267544
7168962 6d63c2 out/Release/nacl_helper
After:
$ size out/Release/nacl_helper
text data bss dec hex filename
1986678 23233 224176
2234087 2216e7 out/Release/nacl_helper
I've done the smallest change necessary for reducing the binary size,
by removing the use of NonSfiListener from nacl_helper_linux.cc.
Further cleanup should be done after this.
This requires removing all of the "TransitionalNonSfi" tests that were
testing the old glibc-based runtime.
BUG=513041
TEST=browser_tests
Review URL: https://codereview.chromium.org/
1250043002
Cr-Commit-Position: refs/heads/master@{#340551}