Enable QUIC for proxies based on Finch config and command line switch.

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 4f0ca9a060c10bd51ab4567e1bbf06e50d52d701..5bc1726f5e74214e4b41db07c9fffc0b557df674 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
@@ -30,7 +30,8 @@ using base::FieldTrialList;
 namespace {
 
 const char kEnabled[] = "Enabled";
-const char kDefaultOrigin[] = "https://proxy.googlezip.net:443";
+const char kDefaultSpdyOrigin[] = "https://proxy.googlezip.net:443";
+const char kDefaultQuicOrigin[] = "quic://proxy.googlezip.net:443";
 const char kDevOrigin[] = "https://proxy-dev.googlezip.net:443";
 const char kDevFallbackOrigin[] = "proxy-dev.googlezip.net:80";
 const char kDefaultFallbackOrigin[] = "compress.googlezip.net:80";
@@ -98,6 +99,19 @@ bool DataReductionProxyParams::IsIncludedInAndroidOnePromoFieldTrial(
   return (fingerprint.find(kAndroidOneIdentifier) != std::string::npos);
 }
 
+// static
+bool DataReductionProxyParams::IsIncludedInUseQUICFieldTrial() {
+  return FieldTrialList::FindFullName("DataReductionProxyUseQuic") == kEnabled;
+}
+
+void DataReductionProxyParams::EnableQUIC(bool quic_enabled_for_proxies) {
+  quic_enabled_for_proxies_ = quic_enabled_for_proxies;
+  if (command_line_origin_.empty() && IsIncludedInUseQUICFieldTrial() &&
+      quic_enabled_for_proxies_)
+    origin_ = net::ProxyServer::FromURI(kDefaultQuicOrigin,

[Ryan Hamilton, 2015/02/11 00:20:32]

It's a bit confusing that there's a member named "origin" which is really a
proxy server not an origin. But that predates this CL :>

[tbansal1, 2015/02/11 01:25:26]

If other reviewers feel strongly about it, I volunteer to make changes in a
separate CL :)

+                                        net::ProxyServer::SCHEME_HTTP);
+}
+
 DataReductionProxyTypeInfo::DataReductionProxyTypeInfo()
     : proxy_servers(),
       is_fallback(false),
@@ -292,6 +306,7 @@ void DataReductionProxyParams::InitWithoutChecks() {
   // command line.
   if (origin.empty())
     origin = GetDefaultDevOrigin();
+  command_line_origin_ = origin;
   if (origin.empty())
     origin = GetDefaultOrigin();
   if (fallback_origin.empty())
@@ -520,7 +535,9 @@ bool DataReductionProxyParams::IsProxyBypassed(
 
 // TODO(kundaji): Remove tests for macro definitions.
 std::string DataReductionProxyParams::GetDefaultOrigin() const {
-  return kDefaultOrigin;
+  return IsIncludedInUseQUICFieldTrial() && quic_enabled_for_proxies_
+             ? kDefaultQuicOrigin
+             : kDefaultSpdyOrigin;
 }
 
 std::string DataReductionProxyParams::GetDefaultFallbackOrigin() const {