Enable DataReductionTrustedSpdyProxy experiment by default

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 94aec4ce75cb06b28ca49ad29d49f38e9e665910..9b507c3fc9a48e58bf65bb26e730c3b9c0f18dff 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
@@ -120,7 +120,18 @@ const char* GetTrustedSpdyProxyFieldTrialName() {
 }
 
 bool IsIncludedInTrustedSpdyProxyFieldTrial() {
-  return IsIncludedInFieldTrial(GetTrustedSpdyProxyFieldTrialName());
+  if (base::StartsWith(
+          FieldTrialList::FindFullName(GetTrustedSpdyProxyFieldTrialName()),
+          kControl, base::CompareCase::SENSITIVE)) {
+    return false;
+  }
+  if (base::StartsWith(
+          FieldTrialList::FindFullName(GetTrustedSpdyProxyFieldTrialName()),
+          kDisabled, base::CompareCase::SENSITIVE)) {
+    return false;
+  }
+  // Trusted SPDY proxy experiment is enabled by default.
+  return true;
 }
 
 const char* GetLoFiFieldTrialName() {