Bug fix: Use the last hidden time for purge + suspend

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 1306 matching lines @@
 }
 
 base::TimeTicks WebContentsImpl::GetLastActiveTime() const {
   return last_active_time_;
 }
 
 void WebContentsImpl::SetLastActiveTime(base::TimeTicks last_active_time) {
   last_active_time_ = last_active_time;
 }
 
+base::TimeTicks WebContentsImpl::GetLastHiddenTime() const {
+  return last_hidden_time_;
+}
+
 void WebContentsImpl::WasShown() {
   controller_.SetActive(true);
 
   for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
     if (view) {
       view->Show();
 #if defined(OS_MACOSX)
       view->SetActive(true);
 #endif
     }
@@ skipping 20 matching lines @@
     // window, OnWindowPosChanged() notices and calls WasHidden() (which
     // calls us).
     for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
       if (view)
         view->Hide();
     }
 
     SendPageMessage(new PageMsg_WasHidden(MSG_ROUTING_NONE));
   }
 
+  last_hidden_time_ = base::TimeTicks::Now();
+
   for (auto& observer : observers_)
     observer.WasHidden();
 
   should_normally_be_visible_ = false;
 }
 
 void WebContentsImpl::WasOccluded() {
   if (capturer_count_ > 0)
     return;
 
@@ skipping 3811 matching lines @@
   dialog_manager_ = dialog_manager;
 }
 
 void WebContentsImpl::RemoveBindingSet(const std::string& interface_name) {
   auto it = binding_sets_.find(interface_name);
   if (it != binding_sets_.end())
     binding_sets_.erase(it);
 }
 
 }  // namespace content