Add Finch experiment for selectively bypassing proxies.

components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc

Index: components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc
diff --git a/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc b/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc
index 53ece226733e4c12637891abcdb7f1691d877e6b..40461a262349dc47c26cffa953d2a92d61fa38df 100644
--- a/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc
+++ b/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.cc
@@ -17,6 +17,8 @@
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "url/gurl.h"
+#include "webkit/common/resource_type.h"
+
 
 namespace {
 bool SetProxyServerFromGURL(const GURL& gurl,
@@ -85,7 +87,22 @@ bool MaybeBypassProxyAndPrepareToRetry(
   return true;
 }
 
+int BuildLoadFlagsForRequest(ResourceType::Type resource_type) {
+  int flags = 0;
+  if (DataReductionProxyParams::IsIncludedInCriticalPathBypassFieldTrial() &&
+      resource_type != ResourceType::IMAGE)
+    flags |= net::LOAD_BYPASS_DATA_REDUCTION_PROXY;
+  return flags;
+}
 
+void OnResolveProxyHandler(const GURL& url, int load_flags,
+                           net::ProxyInfo* result) {
+  if ((load_flags & net::LOAD_BYPASS_DATA_REDUCTION_PROXY) &&
+      !result->is_direct() &&
+      result->proxy_server().isDataReductionProxy()) {
+    result->UseDirect();
+  }
+}
 
 bool IsRequestIdempotent(const net::URLRequest* request) {
   DCHECK(request);