Remove BooleanPrefMember usage from Data Reduction Proxy IO classes.

components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
index 79205a2441fd0539ba3e6670e83c7408e881e6a3..d62b73b4d58ca26690bac7e65ff0f466e4d96c7c 100644
--- a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
@@ -102,7 +102,6 @@ bool DataReductionProxyParams::IsIncludedInAndroidOnePromoFieldTrial(
 bool DataReductionProxyParams::IsLoFiEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       data_reduction_proxy::switches::kEnableDataReductionProxyLoFi);
-
 }
 
 //static
@@ -136,6 +135,12 @@ bool DataReductionProxyParams::IsConfigClientEnabled() {
       data_reduction_proxy::switches::kEnableDataReductionProxyConfigClient);
 }
 
+// static
+bool DataReductionProxyParams::ShouldForceEnableDataReductionProxy() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      data_reduction_proxy::switches::kEnableDataReductionProxy);
+}
+
 void DataReductionProxyParams::EnableQuic(bool enable) {
   quic_enabled_ = enable;
   DCHECK(!quic_enabled_ || IsIncludedInQuicFieldTrial());