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 e8164d7a6f767c5bd7467bbbddfdcaff755e4ccf..0f80f358765195aa44166fc288eda41d46d93ac0 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
@@ -99,6 +99,15 @@ class DataReductionProxyParams {
   static bool IsIncludedInAndroidOnePromoFieldTrial(
       const char* build_fingerprint);
 
+  // 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
@@ -260,6 +269,11 @@ 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,
@@ -321,6 +335,8 @@ class DataReductionProxyParams {
   bool alt_fallback_allowed_;
   bool promo_allowed_;
   bool holdback_;
+  bool quic_enabled_;
+  std::string command_line_origin_;
 
   bool configured_on_command_line_;
 };