[TabManager] [Merge M50] Protect tabs opened in background.

chrome/browser/memory/tab_manager.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 CHROME_BROWSER_MEMORY_TAB_MANAGER_H_
 #define CHROME_BROWSER_MEMORY_TAB_MANAGER_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 99 matching lines @@
 
   // Used to set the test TickClock, which then gets used by NowTicks(). See
   // |test_tick_clock_| for more details.
   void set_test_tick_clock(base::TickClock* test_tick_clock);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, ChildProcessNotifications);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, Comparator);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, DiscardedTabKeepsLastActiveTime);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, DiscardWebContentsAt);
+  FRIEND_TEST_ALL_PREFIXES(TabManagerTest, InvalidOrEmptyURL);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, IsInternalPage);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, OomPressureListener);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, ProtectRecentlyUsedTabs);
+  FRIEND_TEST_ALL_PREFIXES(TabManagerTest, ProtectVideoTabs);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, ReloadDiscardedTabContextMenu);
   FRIEND_TEST_ALL_PREFIXES(TabManagerTest, TabManagerBasics);
 
   // The time that a renderer is given to react to a memory pressure
   // notification before another renderer is also notified. This prevents all
   // renderers from receiving and acting upon notifications simultaneously,
   // which can quickly overload a system. Exposed for unittesting.
   // NOTE: This value needs to be big enough to allow a process to get over the
   // hump in responding to memory pressure, so there aren't multiple processes
   // fighting for CPU and worse, temporary memory, while trying to free things
@@ skipping 65 matching lines @@
       base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
 
   // TabStripModelObserver overrides.
   void TabChangedAt(content::WebContents* contents,
                     int index,
                     TabChangeType change_type) override;
   void ActiveTabChanged(content::WebContents* old_contents,
                         content::WebContents* new_contents,
                         int index,
                         int reason) override;
+  void TabInsertedAt(content::WebContents* contents,
+                     int index,
+                     bool foreground) override;
 
   // Returns true if the tab is currently playing audio or has played audio
   // recently, or if the tab is currently accessing the camera, microphone or
   // mirroring the display.
   bool IsMediaTab(content::WebContents* contents) const;
 
   // Returns the WebContentsData associated with |contents|. Also takes care of
   // creating one if needed.
   WebContentsData* GetWebContentsData(content::WebContents* contents) const;
 
@@ skipping 92 matching lines @@
 
   // Weak pointer factory used for posting delayed tasks to task_runner_.
   base::WeakPtrFactory<TabManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TabManager);
 };
 
 }  // namespace memory
 
 #endif  // CHROME_BROWSER_MEMORY_TAB_MANAGER_H_