Added a script to remove headers from the target....

build/common.gypi

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     # .gyp files should set chromium_code to 1 if they build Chromium-specific
     # code, as opposed to external code.  This variable is used to control
     # such things as the set of warnings to enable, and whether warnings are
     # treated as errors.
@@ skipping 330 matching lines @@
                                  {'GCC_PRECOMPILE_PREFIX_HEADER': 'NO'}],
           ],
         },
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
           }],
           ['_mac_bundle', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
           }],
+          ['_type=="executable" and _mac_bundle', {
+            'postbuilds': [
+              {
+                'variables': {
+                  # Define remove_target_headers in a variable ending in _path
+                  # so that gyp understands it's a path and performs proper
+                  # relativization during dict merging.
+                  'remove_target_headers_path': 'mac/remove_target_headers',
+                },
+                'postbuild_name': 'Remove Target Headers',
+                'action': ['<(remove_target_headers_path)'],
+              },
+            ],
+          }],
           ['_type=="executable"', {
             'postbuilds': [
               {
                 'variables': {
                   # Define strip_from_xcode in a variable ending in _path so
                   # that gyp understands it's a path and performs proper
                   # relativization during dict merging.
                   'strip_from_xcode_path': 'mac/strip_from_xcode',
                 },
                 'postbuild_name': 'Strip If Needed',
@@ skipping 97 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }