Adding previews information to PLM UKM

chrome/browser/previews/previews_infobar_delegate.cc

Index: chrome/browser/previews/previews_infobar_delegate.cc
diff --git a/chrome/browser/previews/previews_infobar_delegate.cc b/chrome/browser/previews/previews_infobar_delegate.cc
index 110f20885eda515966c239a227430ac53c795f2d..58d1096b020b74772aa4a019a5590186cef6cbd4 100644
--- a/chrome/browser/previews/previews_infobar_delegate.cc
+++ b/chrome/browser/previews/previews_infobar_delegate.cc
@@ -24,6 +24,9 @@
 #include "components/infobars/core/infobar.h"
 #include "components/network_time/network_time_tracker.h"
 #include "components/previews/core/previews_features.h"
+#include "components/ukm/public/ukm_entry_builder.h"
+#include "components/ukm/public/ukm_recorder.h"
+#include "components/ukm/ukm_source.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -34,6 +37,9 @@
 
 namespace {
 
+const char kPreviewsName[] = "Previews";
+const char kPreviewsOptOut[] = "opt_out";
+
 void RecordPreviewsInfoBarAction(
     previews::PreviewsType previews_type,
     PreviewsInfoBarDelegate::PreviewsInfoBarAction action) {
@@ -225,6 +231,10 @@ bool PreviewsInfoBarDelegate::LinkClicked(WindowOpenDisposition disposition) {
 
   ReportPingbackInformation(web_contents);
 
+  // TODO(ryansturm): Add support for Offline Previews in PLM UKM.
+  if (previews_type_ != previews::PreviewsType::OFFLINE)
+    RecordUKMOptOut();
+
   if ((previews_type_ == previews::PreviewsType::LITE_PAGE ||
        previews_type_ == previews::PreviewsType::LOFI) &&
       !data_reduction_proxy::params::IsBlackListEnabledForServerPreviews()) {
@@ -282,3 +292,18 @@ base::string16 PreviewsInfoBarDelegate::GetTimestampText() const {
         base::IntToString16(staleness_in_minutes / 60));
   }
 }
+
+void PreviewsInfoBarDelegate::RecordUKMOptOut() {
+  content::WebContents* web_contents =
+      InfoBarService::WebContentsFromInfoBar(infobar());
+  PreviewsInfoBarTabHelper* infobar_tab_helper =
+      PreviewsInfoBarTabHelper::FromWebContents(web_contents);
+  if (!infobar_tab_helper || !infobar_tab_helper->source_id()) {
+    return;
+  }
+
+  ukm::UkmRecorder* ukm_recorder = g_browser_process->ukm_recorder();
+  std::unique_ptr<ukm::UkmEntryBuilder> builder = ukm_recorder->GetEntryBuilder(
+      infobar_tab_helper->source_id().value(), kPreviewsName);
+  builder->AddMetric(kPreviewsOptOut, true);
+}