Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/views/frame/contents_container.h

 // Copyright 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_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 28 matching lines @@
   // The caller must delete or remove the old active view separately.
   void MakeOverlayContentsActiveContents();
 
   // Sets the overlay view. This does not delete the old.
   void SetOverlay(views::WebView* overlay,
                   content::WebContents* overlay_web_contents,
                   int height,
                   InstantSizeUnits units,
                   bool draw_drop_shadow);
 
-  // When the active content is reset and we have a visible overlay,
-  // the overlay must be stacked back at top.
-  void MaybeStackOverlayAtTop();
-
   content::WebContents* overlay_web_contents() const {
     return overlay_web_contents_;
   }
 
   int overlay_height() const {
     return overlay_ ? overlay_->bounds().height() : 0;
   }
 
   // Sets the active top margin; the active WebView's y origin would be
   // positioned at this |margin|, causing the active WebView to be pushed down
@@ skipping 30 matching lines @@
   // The desired height of the overlay and units.
   int overlay_height_;
   InstantSizeUnits overlay_height_units_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_