Set Mac creator signature to 'rimZ' (Google Chrome) and 'Cr24' (Chromium)

chrome/app/app-Info.plist

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
         <key>CFBundleDevelopmentRegion</key>
         <string>English</string>
         <key>UTExportedTypeDeclarations</key>
         <array>
                 <dict>
                         <key>UTTypeIdentifier</key>
@@ skipping 137 matching lines @@
         <string>app.icns</string>
         <key>CFBundleIdentifier</key>
         <string>${CHROMIUM_BUNDLE_ID}</string>
         <key>CFBundleInfoDictionaryVersion</key>
         <string>6.0</string>
         <key>CFBundleName</key>
         <string>${CHROMIUM_SHORT_NAME}</string>
         <key>CFBundlePackageType</key>
         <string>APPL</string>
         <key>CFBundleSignature</key>
-        <string>????</string>
+        <string>${CHROMIUM_CREATOR}</string>
         <key>CFBundleURLTypes</key>
         <array>
                 <dict>
                         <key>CFBundleURLName</key>
                         <string>Web site URL</string>
                         <key>CFBundleURLSchemes</key>
                         <array>
                                 <string>http</string>
                                 <string>https</string>
                         </array>
@@ skipping 20 matching lines @@
         <key>LSFileQuarantineEnabled</key>
         <true/>
         <key>LSMinimumSystemVersion</key>
         <string>10.5.0</string>
         <key>NSMainNibFile</key>
         <string>MainMenu</string>
         <key>NSPrincipalClass</key>
         <string>NSApplication</string>
 </dict>
 </plist>