Enable side-by-side beta and dev channels.

chrome/test/mini_installer/config/chrome_dev_installed.prop

 {
-  "Condition": "$SUPPORTS_SXS",
+  "Condition": "'$BRAND' == 'Google Chrome'",
   "Files": {
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\chrome.exe": {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\chrome.VisualElementsManifest.xml": {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\chrome.dll":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\chrome.exe": {"exists": true},
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\chrome.VisualElementsManifest.xml": {"exists": true},
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\chrome.dll":
         {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\chrome_elf.dll":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\chrome_elf.dll":
         {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\chrome.7z":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\chrome.7z":
         {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\setup.exe":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\setup.exe":
         {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\$MINI_INSTALLER_FILE_VERSION.manifest":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\$MINI_INSTALLER_FILE_VERSION.manifest":
         {"exists": true},
-    "$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\$NEXT_VERSION_MINI_INSTALLER_FILE_VERSION":
+    "$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\$NEXT_VERSION_MINI_INSTALLER_FILE_VERSION":
         {"exists": false}
   },
   "RegistryEntries": {
-    "HKEY_CURRENT_USER\\$CHROME_UPDATE_REGISTRY_SUBKEY_SXS": {
+    "HKEY_CURRENT_USER\\$CHROME_UPDATE_REGISTRY_SUBKEY_DEV": {
       "exists": "required",
       "values": {
         "pv": {"type": "SZ", "data": "$MINI_INSTALLER_FILE_VERSION"}
       }
     },
-    "HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\$CHROME_LONG_NAME_SXS": {
+    "HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\$CHROME_LONG_NAME_DEV": {
       "exists": "required",
       "values": {
         "UninstallString": {
           "type": "SZ",
-          "data": "\"$LOCAL_APPDATA\\$CHROME_DIR_SXS\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\setup.exe\" --uninstall --chrome-sxs --verbose-logging"
+          "data": "\"$LOCAL_APPDATA\\$CHROME_DIR_DEV\\Application\\$MINI_INSTALLER_FILE_VERSION\\Installer\\setup.exe\" --uninstall --chrome-dev --verbose-logging"
         },
         "Version": {"type": "SZ", "data": "$MINI_INSTALLER_FILE_VERSION"}
       }
     },
-    "HKEY_CURRENT_USER\\Software\\Classes\\$CHROME_SHORT_NAME_SXS$USER_SPECIFIC_REGISTRY_SUFFIX": {
+    "HKEY_CURRENT_USER\\Software\\Classes\\$CHROME_SHORT_NAME_DEV$USER_SPECIFIC_REGISTRY_SUFFIX": {
       "exists": "forbidden"
     }
   }
 }