Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/build/android/gyp/gcc_preprocess.py b/build/android/gyp/gcc_preprocess.py
new file mode 100755
index 0000000..03becf9
--- /dev/null
+++ b/build/android/gyp/gcc_preprocess.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+#
+# Copyright 2013 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.
+
+import optparse
+import os
+import sys
+
+from util import build_utils
+
+def DoGcc(options):
+  build_utils.MakeDirectory(os.path.dirname(options.output))
+
+  gcc_cmd = [ 'gcc' ]  # invoke host gcc.
+  if options.defines:
+    gcc_cmd.extend(sum(map(lambda w: ['-D', w], options.defines), []))
+  gcc_cmd.extend([
+      '-E',                  # stop after preprocessing.
+      '-D', 'ANDROID',       # Specify ANDROID define for pre-processor.
+      '-x', 'c-header',      # treat sources as C header files
+      '-P',                  # disable line markers, i.e. '#line 309'
+      '-I', options.include_path,
+      '-o', options.output,
+      options.template
+      ])
+
+  build_utils.CheckOutput(gcc_cmd)
+
+
+def main(args):
+  args = build_utils.ExpandFileArgs(args)
+
+  parser = optparse.OptionParser()
+  build_utils.AddDepfileOption(parser)
+
+  parser.add_option('--include-path', help='Include path for gcc.')
+  parser.add_option('--template', help='Path to template.')
+  parser.add_option('--output', help='Path for generated file.')
+  parser.add_option('--stamp', help='Path to touch on success.')
+  parser.add_option('--defines', help='Pre-defines macros', action='append')
+
+  options, _ = parser.parse_args(args)
+
+  DoGcc(options)
+
+  if options.depfile:
+    build_utils.WriteDepfile(
+        options.depfile,
+        build_utils.GetPythonDependencies())
+
+  if options.stamp:
+    build_utils.Touch(options.stamp)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))