Change how version_build_patch is computed to allow PATCH > 255

chrome/chrome.gyp

 # Copyright (c) 2010 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': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
     },
     'version_py_path': '<(version_py_path)',
     'version_path': '<(version_path)',
     'version_full':
         '<!(python <(version_py_path) -f <(version_path) -t "@MAJOR@.@MINOR@.@BUILD@.@PATCH@")',
-    'version_build_patch':
-        '<!(python <(version_py_path) -f <(version_path) -t "@BUILD@.@PATCH@")',
+    'version_mac_dylib':
+        '<!(python <(version_py_path) -f <(version_path) -t "@BUILD@.@PATCH_HI@.@PATCH_LO@" -e "PATCH_HI=int(PATCH)/256" -e "PATCH_LO=int(PATCH)%256")',
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
     # Linux or Mac, and into chrome.dll on Windows.
     'chromium_dependencies': [
       'common',
       'browser',
       'debugger',
       'chrome_gpu',
@@ skipping 1175 matching lines @@
           ],
           'include_dirs': [
             '..',
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/Carbon.framework',
             ],
           },
           'xcode_settings': {
-            'DYLIB_COMPATIBILITY_VERSION': '<(version_build_patch)',
-            'DYLIB_CURRENT_VERSION': '<(version_build_patch)',
+            'DYLIB_COMPATIBILITY_VERSION': '<(version_mac_dylib)',
+            'DYLIB_CURRENT_VERSION': '<(version_mac_dylib)',
             'DYLIB_INSTALL_NAME_BASE': '@executable_path',
           },
           'postbuilds': [
             {
               # The framework (chrome_dll) defines its load-time path
               # (DYLIB_INSTALL_NAME_BASE) relative to the main executable
               # (chrome).  A different relative path needs to be used in
               # plugin_carbon_interpose, which runs in the helper_app.
               'postbuild_name': 'Fix Framework Link',
               'action': [
@@ skipping 399 matching lines @@
       }],  # targets
     }],  # OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"
   ],  # 'conditions'
 }
 
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