Propogate the tab foreground, background change events to data use

chrome/browser/data_use_measurement/data_use_web_contents_observer.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 
 #include "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.h"
 #include "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service_factory.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"

[RyanSturm, 2016/12/13 22:04:20]

is this header needed?

[Raj, 2016/12/14 23:00:50]

Removed.

 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
     data_use_measurement::DataUseWebContentsObserver);
 
 namespace data_use_measurement {
 
 // static
 void DataUseWebContentsObserver::CreateForWebContents(
     content::WebContents* web_contents) {
   DCHECK(web_contents);
@@ skipping 44 matching lines @@
 void DataUseWebContentsObserver::DidStartNavigation(
     content::NavigationHandle* navigation_handle) {
   service_->DidStartNavigation(navigation_handle);
 }
 
 void DataUseWebContentsObserver::ReadyToCommitNavigation(
     content::NavigationHandle* navigation_handle) {
   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