clang bots: Use gcc 4.8.5 instead of 4.8.2 as stage1 compiler.

tools/clang/scripts/update.py

 #!/usr/bin/env python
 # 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 is used to download prebuilt clang binaries.
 
 It is also used by package.py to build the prebuilt clang binaries."""
 
 import argparse
@@ skipping 281 matching lines @@
     f.write('# disallows reuse of the same binary dir for multiple source\n')
     f.write('# dirs, so the build artifacts need to go into a subdirectory.\n')
     f.write('# dirs, so the build artifacts need to go into a subdirectory.\n')
     f.write('if (CHROMIUM_TOOLS_SRC)\n')
     f.write('  add_subdirectory(${CHROMIUM_TOOLS_SRC} ' +
               '${CMAKE_CURRENT_BINARY_DIR}/a)\n')
     f.write('endif (CHROMIUM_TOOLS_SRC)\n')
 
 
 def DownloadHostGcc(args):
-  """Downloads gcc 4.8.2 and makes sure args.gcc_toolchain is set."""
+  """Downloads gcc 4.8.5 and makes sure args.gcc_toolchain is set."""
   if not sys.platform.startswith('linux') or args.gcc_toolchain:
     return
   # Unconditionally download a prebuilt gcc to guarantee the included libstdc++
   # works on Ubuntu Precise.
-  gcc_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gcc482precise')
+  gcc_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gcc485precise')
   if not os.path.exists(gcc_dir):
-    print 'Downloading pre-built GCC 4.8.2...'
+    print 'Downloading pre-built GCC 4.8.5...'
     DownloadAndUnpack(
-        CDS_URL + '/tools/gcc482precise.tgz', LLVM_BUILD_TOOLS_DIR)
+        CDS_URL + '/tools/gcc485precise.tgz', LLVM_BUILD_TOOLS_DIR)
   args.gcc_toolchain = gcc_dir
 
 
 def AddCMakeToPath():
   """Download CMake and add it to PATH."""
   if sys.platform == 'win32':
     zip_name = 'cmake-3.4.3-win32-x86.zip'
     cmake_dir = os.path.join(LLVM_BUILD_TOOLS_DIR,
                              'cmake-3.4.3-win32-x86', 'bin')
   else:
@@ skipping 578 matching lines @@
     args.force_local_build = True
     if 'OS=android' not in os.environ.get('GYP_DEFINES', ''):
       # Only build the Android ASan rt on ToT bots when targetting Android.
       args.with_android = False
 
   return UpdateClang(args)
 
 
 if __name__ == '__main__':
   sys.exit(main())