Sending a data saver Pageload metrics pingback

components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc
index 6c989c0e014fd0180ba2b04a9fc4ccc5e9043998..82eb6f27b2cd42542258e846fdf508187ce9d492 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.cc
@@ -21,20 +21,21 @@
 #include "components/data_reduction_proxy/core/common/lofi_decider.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/proxy/proxy_info.h"
 #include "net/proxy/proxy_server.h"
 #include "net/proxy/proxy_service.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_status.h"
+#include "url/gurl.h"
 
 namespace {
 
 // |lofi_low_header_added| is set to true iff Lo-Fi "q=low" request header can
 // be added to the Chrome proxy headers.
 // |received_content_length| is the number of prefilter bytes received.
 // |original_content_length| is the length of resource if accessed directly
 // without data saver proxy.
 // |freshness_lifetime| contains information on how long the resource will be
 // fresh for and how long is the usability.
@@ -195,22 +196,26 @@ void DataReductionProxyNetworkDelegate::OnBeforeSendHeadersInternal(
     return;
   if (!data_reduction_proxy_config_->IsDataReductionProxy(
           proxy_info.proxy_server().host_port_pair(), nullptr)) {
     return;
   }
 
   // Retrieves DataReductionProxyData from a request, creating a new instance
   // if needed.
   DataReductionProxyData* data =
       DataReductionProxyData::GetDataAndCreateIfNecessary(request);
-  if (data)
+  if (data) {
     data->set_used_data_reduction_proxy(true);
+    data->set_session_key(
+        data_reduction_proxy_request_options_->GetSecureSession());
+    data->set_original_request_url(request->original_url());
+  }
 
   if (data_reduction_proxy_io_data_ &&
       data_reduction_proxy_io_data_->lofi_decider()) {
     LoFiDecider* lofi_decider = data_reduction_proxy_io_data_->lofi_decider();
     bool is_using_lofi_mode =
         lofi_decider->MaybeAddLoFiDirectiveToHeaders(*request, headers);
 
     if ((request->load_flags() & net::LOAD_MAIN_FRAME)) {
       data_reduction_proxy_io_data_->SetLoFiModeActiveOnMainFrame(
           is_using_lofi_mode);