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..9b47d2a3a19191fb11bce6c6143a9a3ccf30d041 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_used_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_);
@@ -245,20 +245,22 @@ 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_used_data_reduction_proxy_);
   rfh->SendNavigate(page_id, entry->GetUniqueID(),
                     GetController().GetPendingEntryIndex() == -1,
                     entry->GetURL());
   // Simulate the SwapOut_ACK. This is needed when cross-site navigation
   // happens.
   if (old_rfh != rfh)
     old_rfh->OnSwappedOut();
 }
 
 void TestWebContents::ProceedWithCrossSiteNavigation() {