Adding DRP specfic UMA for FirstContentfulPaint

content/test/test_web_contents.cc

Index: content/test/test_web_contents.cc
diff --git a/content/test/test_web_contents.cc b/content/test/test_web_contents.cc
index c424f939f82602b0c376637bef1bd4e7e7432fa2..55c71c0ed775c10afca2882fadb32efa17950882 100644
--- a/content/test/test_web_contents.cc
+++ b/content/test/test_web_contents.cc
@@ -23,22 +23,22 @@
 #include "content/public/test/mock_render_process_host.h"
 #include "content/test/test_render_view_host.h"
 #include "ui/base/page_transition_types.h"
 
 namespace content {
 
 TestWebContents::TestWebContents(BrowserContext* browser_context)
     : WebContentsImpl(browser_context),
       delegate_view_override_(NULL),
       expect_set_history_offset_and_length_(false),
-      expect_set_history_offset_and_length_history_length_(0) {
-}
+      expect_set_history_offset_and_length_history_length_(0),
+      simulate_fetch_via_data_reduction_proxy_(false) {}
 
 TestWebContents* TestWebContents::Create(BrowserContext* browser_context,
                                          SiteInstance* instance) {
   TestWebContents* test_web_contents = new TestWebContents(browser_context);
   test_web_contents->Init(WebContents::CreateParams(browser_context, instance));
   return test_web_contents;
 }
 
 TestWebContents::~TestWebContents() {
   EXPECT_FALSE(expect_set_history_offset_and_length_);
@@ -131,20 +131,21 @@ void TestWebContents::TestDidNavigateWithReferrer(
   params.should_update_history = false;
   params.searchable_form_url = GURL();
   params.searchable_form_encoding = std::string();
   params.did_create_new_entry = did_create_new_entry;
   params.security_info = std::string();
   params.gesture = NavigationGestureUser;
   params.was_within_same_page = false;
   params.is_post = false;
   params.page_state = PageState::CreateFromURL(url);
   params.contents_mime_type = std::string("text/html");
+  params.used_data_reduction_proxy = simulate_fetch_via_data_reduction_proxy_;
 
   rfh->SendNavigateWithParams(&params);
 }
 
 const std::string& TestWebContents::GetSaveFrameHeaders() {
   return save_frame_headers_;
 }
 
 bool TestWebContents::CrossProcessNavigationPending() {
   if (IsBrowserSideNavigationEnabled()) {
@@ -245,23 +246,26 @@ void TestWebContents::CommitPendingNavigation() {
   CHECK(!browser_side_navigation || rfh->is_loading());
   CHECK(!browser_side_navigation ||
         !rfh->frame_tree_node()->navigation_request());
 
   int page_id = entry->GetPageID();
   if (page_id == -1) {
     // It's a new navigation, assign a never-seen page id to it.
     page_id = GetMaxPageIDForSiteInstance(rfh->GetSiteInstance()) + 1;
   }
 
+  rfh->set_simulate_used_data_reduction_proxy(
+      simulate_fetch_via_data_reduction_proxy_);
   rfh->SendNavigate(page_id, entry->GetUniqueID(),
                     GetController().GetPendingEntryIndex() == -1,
                     entry->GetURL());
+  rfh->set_simulate_used_data_reduction_proxy(false);
   // Simulate the SwapOut_ACK. This is needed when cross-site navigation
   // happens.
   if (old_rfh != rfh)
     old_rfh->OnSwappedOut();
 }
 
 void TestWebContents::ProceedWithCrossSiteNavigation() {
   if (!GetPendingMainFrame())
     return;
   GetMainFrame()->SendBeforeUnloadACK(true);