Propogate the tab foreground, background change events to data use

chrome/browser/data_use_measurement/data_use_web_contents_observer.cc

Index: chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
diff --git a/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc b/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
index d1e35963da56f84e2c3b64a8066abe0deaa18856..37676c38436110ac756a3fc4ddb21c6a5bbf29e8 100644
--- a/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
+++ b/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
@@ -72,4 +72,18 @@ void DataUseWebContentsObserver::ReadyToCommitNavigation(
   service_->ReadyToCommitNavigation(navigation_handle);
 }
 
+void DataUseWebContentsObserver::WasShown() {
+  service_->WasShownOrHidden(web_contents()->GetMainFrame(), true);
+}
+
+void DataUseWebContentsObserver::WasHidden() {
+  service_->WasShownOrHidden(web_contents()->GetMainFrame(), false);
+}
+
+void DataUseWebContentsObserver::RenderFrameHostChanged(
+    content::RenderFrameHost* old_host,
+    content::RenderFrameHost* new_host) {
+  service_->RenderFrameHostChanged(old_host, new_host);
+}
+
 }  // namespace data_use_measurement