Revert of Moving proxy resolution logic out of NetworkDelegate and into ProxyDelegate

components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc
index 8b74b49e1c3783d36de716d879d4c97c5fbb96cc..5a86b16c09e6bcbb5dd14965cc1893fb36e1b177 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc
@@ -149,9 +149,8 @@
                    base::Unretained(this))));
   }
 
-  proxy_delegate_.reset(new DataReductionProxyDelegate(
-      request_options_.get(), config_.get(), configurator_.get(),
-      event_creator_.get(), bypass_stats_.get(), net_log_));
+  proxy_delegate_.reset(
+      new DataReductionProxyDelegate(request_options_.get(), config_.get()));
  }
 
  DataReductionProxyIOData::DataReductionProxyIOData()
@@ -222,18 +221,11 @@
   scoped_ptr<DataReductionProxyNetworkDelegate> network_delegate(
       new DataReductionProxyNetworkDelegate(
           std::move(wrapped_network_delegate), config_.get(),
-          request_options_.get(), configurator_.get()));
+          request_options_.get(), configurator_.get(), net_log_,
+          event_creator_.get()));
   if (track_proxy_bypass_statistics)
     network_delegate->InitIODataAndUMA(this, bypass_stats_.get());
   return network_delegate;
-}
-
-scoped_ptr<DataReductionProxyDelegate>
-DataReductionProxyIOData::CreateProxyDelegate() const {
-  DCHECK(io_task_runner_->BelongsToCurrentThread());
-  return make_scoped_ptr(new DataReductionProxyDelegate(
-      request_options_.get(), config_.get(), configurator_.get(),
-      event_creator_.get(), bypass_stats_.get(), net_log_));
 }
 
 // TODO(kundaji): Rename this method to something more descriptive.