Make as many URLs as possible be HTTPS.

tools/clang/scripts/update.sh

 #!/usr/bin/env bash
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script will check out llvm and clang into third_party/llvm and build it.
 
 # Do NOT CHANGE this if you don't know what you're doing -- see
-# http://code.google.com/p/chromium/wiki/UpdatingClang
+# https://code.google.com/p/chromium/wiki/UpdatingClang
 # Reverting problematic clang rolls is safe, though.
 CLANG_REVISION=145240
 
 THIS_DIR="$(dirname "${0}")"
 LLVM_DIR="${THIS_DIR}/../../../third_party/llvm"
 LLVM_BUILD_DIR="${LLVM_DIR}/../llvm-build"
 CLANG_DIR="${LLVM_DIR}/tools/clang"
 STAMP_FILE="${LLVM_BUILD_DIR}/cr_build_revision"
 
 # ${A:-a} returns $A if it's set, a else.
-LLVM_REPO_URL=${LLVM_URL:-http://llvm.org/svn/llvm-project}
+LLVM_REPO_URL=${LLVM_URL:-https://llvm.org/svn/llvm-project}
 
 # Die if any command dies.
 set -e
 
 OS="$(uname -s)"
 
 # Parse command line options.
 force_local_build=
 mac_only=
 run_tests=
@@ skipping 172 matching lines @@
 if [[ -n "$run_tests" ]]; then
   # Run a few tests.
   "${PLUGIN_SRC_DIR}/tests/test.sh" "${LLVM_BUILD_DIR}/Release+Asserts"
   cd "${LLVM_BUILD_DIR}"
   make check-all
   cd -
 fi
 
 # After everything is done, log success for this revision.
 echo "${CLANG_REVISION}" > "${STAMP_FILE}"