Revert of NaCl: Update revision in DEPS, 58c9abe -> fea15c4 (patchset #1 id:1...

Revert of NaCl: Update revision in DEPS, 58c9abe -> fea15c4 (patchset #1 id:1 of https://codereview.chromium.org/867463008/)

Reason for revert:
This is causing official builds to fail, as the DEPS hash is not valid

Original issue's description:
> NaCl: Update revision in DEPS, 58c9abe -> fea15c4
>
> This pulls in the following Native Client changes:
>
> f02226b: (bbudge@chromium.org) Disable mmap_unittest.cc tests on Windows 64 in Debug...
> 6bc00f6: (dschuff@chromium.org) Update upstream compiler_rt to HEAD and use official git mirror
> 55d212c: (phosek@chromium.org) Updates the tools Makefile to work with Git
> ccc9c66: (shyamsundarr@chromium.org) Add all remaining avx2 instructions except vgather.
> 9595661: (jfb@chromium.org) Enable -Werror for LLVM build
> aa51c35: (pcc@google.com) Disable -flto when compiling nacl_bootstrap_lib.
> 476c662: (jfb@chromium.org) PNaCl: Update Subzero and LLVM revision in pnacl/COMPONENT_REVISIONS
> 2f388a0: (dschuff@chromium.org) Enable SCons testing of arm-nacl-clang on the bots
> fea15c4: (bbudge@chromium.org) Disable mmap_unittest.cc tests on Windows 64 in Debug...
>
> BUG=none
> TEST=browser_tests and nacl_integration
> CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32,linux_arm_compile,linux_nacl_sdk_build
>
> Committed: https://crrev.com/cebaf8cb5f60a5e3f3ecbfd65ebb338c90dba400
> Cr-Commit-Position: refs/heads/master@{#314020}

TBR=jfb@chromium.org,mseaborn@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/889163003

Cr-Commit-Position: refs/heads/master@{#314071}

DEPS

@@ -94,7 +94,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling NaCl
   # and whatever else without interference from each other.
-  'nacl_revision': 'fea15c4',
+  'nacl_revision': '58c9abefa29b489e4b40fc581451bdb7d2984372',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.