Avoid discarding freshly created background tabs

content/browser/web_contents/web_contents_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 215 matching lines @@
   virtual bool DisplayedInsecureContent() const OVERRIDE;
   virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
   virtual void DecrementCapturerCount() OVERRIDE;
   virtual int GetCapturerCount() const OVERRIDE;
   virtual bool IsCrashed() const OVERRIDE;
   virtual void SetIsCrashed(base::TerminationStatus status,
                             int error_code) OVERRIDE;
   virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
   virtual bool IsBeingDestroyed() const OVERRIDE;
   virtual void NotifyNavigationStateChanged(unsigned changed_flags) OVERRIDE;
-  virtual base::TimeTicks GetLastSelectedTime() const OVERRIDE;
+  virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
   virtual void WasShown() OVERRIDE;
   virtual void WasHidden() OVERRIDE;
   virtual bool NeedToFireBeforeUnload() OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual WebContents* Clone() OVERRIDE;
   virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
   virtual bool ShowingInterstitialPage() const OVERRIDE;
   virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
   virtual bool IsSavable() OVERRIDE;
   virtual void OnSavePage() OVERRIDE;
@@ skipping 372 matching lines @@
   friend class WebContentsObserver;
   friend class WebContents;  // To implement factory methods.
 
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
                            CrossSiteCantPreemptAfterUnload);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
+  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 
   // So InterstitialPageImpl can access SetIsLoading.
   friend class InterstitialPageImpl;
 
   // TODO(brettw) TestWebContents shouldn't exist!
   friend class TestWebContents;
 
@@ skipping 342 matching lines @@
   JavaScriptDialogManager* dialog_manager_;
 
   // Set to true when there is an active "before unload" dialog.  When true,
   // we've forced the throbber to start in Navigate, and we need to remember to
   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
   bool is_showing_before_unload_dialog_;
 
   // Settings that get passed to the renderer process.
   RendererPreferences renderer_preferences_;
 
-  // The time that this tab was last selected.
-  base::TimeTicks last_selected_time_;
+  // The time that this WebContents was last made active. The initial value is
+  // the WebContents creation time.
+  base::TimeTicks last_active_time_;
 
   // See description above setter.
   bool closed_by_user_gesture_;
 
   // Minimum/maximum zoom percent.
   int minimum_zoom_percent_;
   int maximum_zoom_percent_;
   // If true, the default zoom limits have been overriden for this tab, in which
   // case we don't want saved settings to apply to it and we don't want to
   // remember it.
@@ skipping 55 matching lines @@
   // Whether this WebContents is responsible for displaying a subframe in a
   // different process from its parent page.
   bool is_subframe_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_