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

components/data_reduction_proxy/core/common/data_reduction_proxy_params.h

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
index a0fcb0524d223e805c3f6f3f78a525563e2779b6..cf26ab7b45ca3a085a07236a057224c6d0499fd1 100644
--- a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
@@ -103,6 +103,15 @@ class DataReductionProxyParams {
   // mode.
   static bool IsLoFiEnabled();
 
+  // Returns true if this client is part of a field trial that sets the origin
+  // proxy server as quic://proxy.googlezip.net.
+  static bool IsIncludedInQuicFieldTrial();
+
+  static std::string GetQuicFieldTrialName();
+
+  // If true, uses QUIC instead of SPDY to connect to proxies that use TLS.
+  void EnableQuic(bool enable);
+
   // Constructs configuration parameters. If |kAllowed|, then the standard
   // data reduction proxy configuration is allowed to be used. If
   // |kfallbackAllowed| a fallback proxy can be used if the primary proxy is
@@ -264,6 +273,11 @@ class DataReductionProxyParams {
     return configured_on_command_line_;
   }
 
+  // Returns true if QUIC is enabled for proxies.
+  bool IsQuicEnabled() const {
+    return quic_enabled_;
+  }
+
  protected:
   // Test constructor that optionally won't call Init();
   DataReductionProxyParams(int flags,
@@ -325,6 +339,8 @@ class DataReductionProxyParams {
   bool alt_fallback_allowed_;
   bool promo_allowed_;
   bool holdback_;
+  bool quic_enabled_;
+  std::string command_line_origin_;
 
   bool configured_on_command_line_;
 };