Data reduction proxy reconfigured on pref view

chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc
index 206678e3a69fa5a667d998e153a3bd978330f4e7..65d1add2bad07293e0af0bf1044c4193ef9315b7 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.cc
@@ -354,8 +354,10 @@ void DataReductionProxySettings::SetDataReductionProxyEnabled(bool enabled) {
   if (!IsDataReductionProxyAllowed())
     return;
 
-  spdy_proxy_auth_enabled_.SetValue(enabled);
-  OnProxyEnabledPrefChange();
+  if (spdy_proxy_auth_enabled_.GetValue() != enabled) {
+    spdy_proxy_auth_enabled_.SetValue(enabled);
+    OnProxyEnabledPrefChange();
+  }
 }
 
 int64 DataReductionProxySettings::GetDataReductionLastUpdateTime() {