Start to implicitly include \n in rc_header_format.

grit/tool/build.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.
 
 '''The 'grit build' tool along with integration for this tool with the
 SCons build system.
 '''
 
 import filecmp
@@ skipping 67 matching lines @@
   -w WHITELISTFILE  Path to a file containing the string names of the
                     resources to include.  Anything not listed is dropped.
 
   -t PLATFORM       Specifies the platform the build is targeting; defaults
                     to the value of sys.platform. The value provided via this
                     flag should match what sys.platform would report for your
                     target platform; see grit.node.base.EvaluateCondition.
 
   -h HEADERFORMAT   Custom format string to use for generating rc header files.
                     The string should have two placeholders: {textual_id}
-                    and {numeric_id}. E.g. "#define {textual_id} {numeric_id}\n"
+                    and {numeric_id}. E.g. "#define {textual_id} {numeric_id}"
                     Otherwise it will use the default "#define SYMBOL 1234"
 
 Conditional inclusion of resources only affects the output of files which
 control which resources get linked into a binary, e.g. it affects .rc files
 meant for compilation but it does not affect resource header files (that define
 IDs).  This helps ensure that values of IDs stay the same, that all messages
 are exported to translation interchange files (e.g. XMB files), etc.
 '''
 
   def ShortDescription(self):
@@ skipping 258 matching lines @@
     self.MakeDirectoriesTo(depfile)
     outfile = self.fo_create(depfile, 'wb')
     outfile.writelines(depfile_contents)
 
   @staticmethod
   def MakeDirectoriesTo(file):
     '''Creates directories necessary to contain |file|.'''
     dir = os.path.split(file)[0]
     if not os.path.exists(dir):
       os.makedirs(dir)