Add Finch experiment for selectively bypassing proxies.

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 6558ae123a8d01eac386242f1b1d44222e8e392a..90896e8b7f29e1a3e873f6f8f54e61312bc44426 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -302,7 +302,8 @@ ChromeNetworkDelegate::ChromeNetworkDelegate(
       prerender_tracker_(NULL),
       data_reduction_proxy_params_(NULL),
       data_reduction_proxy_usage_stats_(NULL),
-      data_reduction_proxy_auth_request_handler_(NULL) {
+      data_reduction_proxy_auth_request_handler_(NULL),
+      on_resolve_proxy_handler_(NULL) {
   DCHECK(enable_referrers);
   extensions_delegate_.reset(
       ChromeExtensionsNetworkDelegate::Create(event_router));
@@ -474,6 +475,12 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
   return rv;
 }
 
+void ChromeNetworkDelegate::OnResolveProxy(
+    const GURL& url, int load_flags, net::ProxyInfo* result) {
+  if (on_resolve_proxy_handler_)
+    on_resolve_proxy_handler_->Run(url, load_flags, result);
+}
+
 int ChromeNetworkDelegate::OnBeforeSendHeaders(
     net::URLRequest* request,
     const net::CompletionCallback& callback,