| Index: client/isolateserver.py
 | 
| diff --git a/client/isolateserver.py b/client/isolateserver.py
 | 
| index c8feb0961a2e1e3785cf265c122b827c88771537..df446329fa8a7ba4427dc2119d49c0d7a9ac5726 100755
 | 
| --- a/client/isolateserver.py
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| +++ b/client/isolateserver.py
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| @@ -1966,6 +1966,9 @@ def process_isolate_server_options(
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|        parser.error('--isolate-server is required.')
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|      return
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|  
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| +  if 'ISOLATED_GRPC_PROXY' in os.environ:
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| +    options.is_grpc = True
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| +
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|    if options.is_grpc:
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|      isolate_storage.set_storage_api_class(isolate_storage.IsolateServerGrpc)
 | 
|    else:
 | 
| 
 |