Remove no longer needed "svn revert" lines.

tools/clang/scripts/update.sh

 #!/usr/bin/env bash
 # Copyright (c) 2012 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
 # https://code.google.com/p/chromium/wiki/UpdatingClang
 # Reverting problematic clang rolls is safe, though.
@@ skipping 201 matching lines @@
 
 if [[ -n "${with_android}" ]] && ! [[ -d "${ANDROID_NDK_DIR}" ]]; then
   echo "Android NDK not found at ${ANDROID_NDK_DIR}"
   echo "The Android NDK is needed to build a Clang whose -fsanitize=address"
   echo "works on Android. See "
   echo "http://code.google.com/p/chromium/wiki/AndroidBuildInstructions for how"
   echo "to install the NDK, or pass --without-android."
   exit 1
 fi
 
-# Revert previous temporary patches.
-if [[ -d "${COMPILER_RT_DIR}" ]]; then
-  pushd "${COMPILER_RT_DIR}"
-  svn revert lib/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc
-  svn revert make/platform/clang_linux.mk
-  popd
-fi
-if [[ -d "${LLVM_DIR}" ]]; then
-  pushd "${LLVM_DIR}"
-  svn revert lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
-  svn revert test/CodeGen/ARM/debug-frame-large-stack.ll
-  svn revert test/CodeGen/ARM/debug-frame-vararg.ll
-  svn revert test/CodeGen/ARM/debug-frame.ll
-  popd
-fi
-
 echo Getting LLVM r"${CLANG_REVISION}" in "${LLVM_DIR}"
 if ! svn co --force "${LLVM_REPO_URL}/llvm/trunk@${CLANG_REVISION}" \
                     "${LLVM_DIR}"; then
   echo Checkout failed, retrying
   rm -rf "${LLVM_DIR}"
   svn co --force "${LLVM_REPO_URL}/llvm/trunk@${CLANG_REVISION}" "${LLVM_DIR}"
 fi
 
 echo Getting clang r"${CLANG_REVISION}" in "${CLANG_DIR}"
 svn co --force "${LLVM_REPO_URL}/cfe/trunk@${CLANG_REVISION}" "${CLANG_DIR}"
@@ skipping 228 matching lines @@
       "${TOOL_SRC_DIR}/tests/test.sh" "${LLVM_BUILD_DIR}/Release+Asserts"
     fi
   done
   pushd "${LLVM_BUILD_DIR}"
   ${MAKE} check-all
   popd
 fi
 
 # After everything is done, log success for this revision.
 echo "${CLANG_AND_PLUGINS_REVISION}" > "${STAMP_FILE}"