Add Finch experiment for selectively bypassing proxies.

components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h

Index: components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h
diff --git a/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h b/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h
index 4c28498f79ffdbf080422210b703a2512873b85c..1b0f8ecb927edcc707efd7b015c90ab18da340d8 100644
--- a/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h
+++ b/components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h
@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "webkit/common/resource_type.h"
 
 namespace base {
 class TimeDelta;
@@ -16,6 +17,7 @@ namespace net {
 class HttpResponseHeaders;
 class ProxyServer;
 class URLRequest;
+class ProxyInfo;
 }
 
 class GURL;
@@ -33,6 +35,16 @@ bool MaybeBypassProxyAndPrepareToRetry(
     const net::HttpResponseHeaders* original_response_headers,
     scoped_refptr<net::HttpResponseHeaders>* override_response_headers);
 
+// Return DataReductionProxy-specific load flags to be associated with the
+// given request.
+int BuildLoadFlagsForRequest(ResourceType::Type resource_type);
+
+// Upon ProxyService.ResolveProxy(), bypass if the effective proxy is the data
+// reduction proxy and the net::LOAD_BYPASS_DATA_REDUCTION_PROXY load_flag is
+// set.
+void OnResolveProxyHandler(const GURL& url, int load_flags,
+                           net::ProxyInfo* result);
+
 // Returns true if the request method is idempotent. Only idempotent requests
 // are retried on a bypass. Visible as part of the public API for testing.
 bool IsRequestIdempotent(const net::URLRequest* request);