Parameterize the Google Update appid at build time instead of hard coding it ...

app/app.gyp

Index: app/app.gyp
===================================================================
--- app/app.gyp	(revision 24686)
+++ app/app.gyp	(working copy)
@@ -297,6 +297,51 @@
           'dependencies': ['../build/win/system.gyp:cygwin'],
         }],
       ],
-    },    
+    },
+    {
+      'target_name': 'app_id',
+      'type': 'none',
+      'msvs_guid': '83100055-172B-49EA-B422-B1A92B627D37',
+      'conditions': [
+        ['OS=="win"', 
+          {
+            'actions': [
+              {
+                'action_name': 'appid',
+                'variables': {
+                  'appid_py': '../chrome/tools/build/appid.py',
+                },
+                'conditions': [
+                  [ 'branding=="Chrome"', {
+                    'variables': {
+                      'appid_value': '<(google_update_appid)',
+                    },
+                  }, { # else 
+                    'variables': {
+                      'appid_value': '',
+                    },
+                  }],
+                ],
+                'inputs': [
+                  '<(appid_py)',
+                ],
+                'outputs': [
+                  '<(SHARED_INTERMEDIATE_DIR)/chrome/appid.h',
+                  'tools/build/_always_run_appid_py.marker',

[sgk, 2009/09/03 00:25:23]

There's a problem here.

You're using a .marker file to make sure that the appid update runs every single
time you build.  That's fine, but... (see next comment...)

+                ],
+                'action': [
+                  'python',
+                  '<(appid_py)',
+                  '-a', '<(appid_value)',
+                  '-o', '<(SHARED_INTERMEDIATE_DIR)/chrome/appid.h',
+                ],
+                'process_outputs_as_sources': 1,
+                'message': 'Generating appid information in <(SHARED_INTERMEDIATE_DIR)/chrome/appid.h'
+              },
+            ],
+          },
+        ],
+      ],
+    },
   ],
 }