DRP: Make secure proxy check URL a DRP param

components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc b/components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc
index 4877facd49378b82817674376131b50908f88a1f..6145b52f76cb3147f7d50194a83ea1a01d9fc365 100644
--- a/components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc
+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_switches.cc
@@ -59,10 +59,6 @@ const char kDataReductionProxySecureProxyCheckURL[] =
 const char kDataReductionProxyServerExperimentsDisabled[] =
     "data-reduction-proxy-server-experiments-disabled";
 
-// Sets a URL to fetch to warm up the data reduction proxy on startup and
-// network changes.
-const char kDataReductionProxyWarmupURL[] = "data-reduction-proxy-warmup-url";
-
 // Enable the data reduction proxy.
 const char kEnableDataReductionProxy[] = "enable-spdy-proxy-auth";
 
@@ -70,10 +66,6 @@ const char kEnableDataReductionProxy[] = "enable-spdy-proxy-auth";
 const char kEnableDataReductionProxyBypassWarning[] =
     "enable-data-reduction-proxy-bypass-warning";
 
-// Enables the origin of the carrier test data reduction proxy.
-const char kEnableDataReductionProxyCarrierTest[] =
-    "enable-data-reduction-proxy-carrier-test";
-
 // Enables lite page from the data reduction proxy. This means a lite page
 // should be requested instead of placeholders whenever Lo-Fi mode is on. Lo-fi
 // must also be enabled via a flag or field trial.