Update build tools.

Change-Id: I13238f2eac61dff052ce52083c20f717f212c98e
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/36445
Reviewed-by: Adam Langley <agl@google.com>

util/bot/DEPS

diff --git a/util/bot/DEPS b/util/bot/DEPS
index 1eb563d..09a1cba 100644
--- a/util/bot/DEPS
+++ b/util/bot/DEPS
@@ -36,14 +36,14 @@
     Var('chromium_git') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
 
   'boringssl/util/bot/libFuzzer': {
-    'url': Var('chromium_git') + '/chromium/llvm-project/compiler-rt/lib/fuzzer.git' +'@' + 'e847d8a9b47158695593d5693b0f69250472b229',
+    'url': Var('chromium_git') + '/chromium/llvm-project/compiler-rt/lib/fuzzer.git' +'@' + 'e9b95bcfe2f5472fac2e516a0040aedf2140dd62',
     'condition': 'checkout_fuzzer',
   },
 
   # Update the following revisions from
   # https://chromium.googlesource.com/chromium/src/+/master/buildtools/DEPS
   'boringssl/util/bot/libcxx': {
-    'url': Var('chromium_git') + '/chromium/llvm-project/libcxx.git' + '@' + '955113db37563c8632e31ddcff2047845553d7ff',
+    'url': Var('chromium_git') + '/chromium/llvm-project/libcxx.git' + '@' + '5938e0582bac570a41edb3d6a2217c299adc1bc6',
     'condition': 'checkout_libcxx',
   },
   'boringssl/util/bot/libcxxabi': {

util/bot/go/bootstrap.py

diff --git a/util/bot/go/bootstrap.py b/util/bot/go/bootstrap.py
index d295748..1e97ecf 100755
--- a/util/bot/go/bootstrap.py
+++ b/util/bot/go/bootstrap.py
@@ -45,7 +45,7 @@
 EXE_SFX = '.exe' if sys.platform == 'win32' else ''
 
 # Pinned version of Go toolset to download.
-TOOLSET_VERSION = 'go1.12.1'
+TOOLSET_VERSION = 'go1.12.6'
 
 # Platform dependent portion of a download URL. See http://golang.org/dl/.
 TOOLSET_VARIANTS = {

util/bot/update_clang.py

diff --git a/util/bot/update_clang.py b/util/bot/update_clang.py
index 5151b13..2965f22 100644
--- a/util/bot/update_clang.py
+++ b/util/bot/update_clang.py
@@ -19,10 +19,12 @@
 # CLANG_REVISION and CLANG_SUB_REVISION determine the build of clang
 # to use. These should be synced with tools/clang/scripts/update.py in
 # Chromium.
-CLANG_REVISION = '357569'
+CLANG_REVISION = '80fee25776c2fb61e74c1ecb1a523375c2500b69'
+CLANG_SVN_REVISION = '362913'
 CLANG_SUB_REVISION = 1
 
-PACKAGE_VERSION = "%s-%s" % (CLANG_REVISION, CLANG_SUB_REVISION)
+PACKAGE_VERSION = '%s-%s-%s' % (CLANG_SVN_REVISION, CLANG_REVISION[:8],
+                                CLANG_SUB_REVISION)
 
 # Path constants. (All of these should be absolute paths.)
 THIS_DIR = os.path.abspath(os.path.dirname(__file__))