Remove WebContents::Was{Hidden,Shown}() from the content public interface

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 <stdint.h>
 
 #include <map>
@@ skipping 185 matching lines @@
   void NotifyWebContentsFocused();
 
   WebContentsView* GetView() const;
 
   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
     return screen_orientation_dispatcher_host_.get();
   }
 
   bool should_normally_be_visible() { return should_normally_be_visible_; }
 
+  // Invoked when the WebContentsView becomes visible to the user, or is hidden.
+  void WasShown();
+  void WasHidden();
+
   // Indicate if the window has been occluded, and pass this to the views, only
   // if there is no active capture going on (otherwise it is dropped on the
   // floor).
   void WasOccluded();
   void WasUnOccluded();
 
   // Broadcasts the mode change to all frames.
   void SetAccessibilityMode(AccessibilityMode mode);
 
   // Adds the given accessibility mode to the current accessibility mode
@@ skipping 70 matching lines @@
   int GetCapturerCount() const override;
   bool IsAudioMuted() const override;
   void SetAudioMuted(bool mute) override;
   bool IsCrashed() const override;
   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
   base::TerminationStatus GetCrashedStatus() const override;
   bool IsBeingDestroyed() const override;
   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
   base::TimeTicks GetLastActiveTime() const override;
   void SetLastActiveTime(base::TimeTicks last_active_time) override;
-  void WasShown() override;
-  void WasHidden() override;
+  void MarkBackgrounded() override;
   bool NeedToFireBeforeUnload() override;
   void DispatchBeforeUnload(bool for_cross_site_transition) override;
   void AttachToOuterWebContentsFrame(
       WebContents* outer_web_contents,
       RenderFrameHost* outer_contents_frame) override;
   void Stop() override;
   WebContents* Clone() override;
   void ReloadFocusedFrame(bool ignore_cache) override;
   void Undo() override;
   void Redo() override;
@@ skipping 1042 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_