Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/gtk/instant_overlay_controller_gtk.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_GTK_INSTANT_OVERLAY_CONTROLLER_GTK_H_
+#define CHROME_BROWSER_UI_GTK_INSTANT_OVERLAY_CONTROLLER_GTK_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/instant/instant_overlay_controller.h"
+
+class BrowserWindowGtk;
+class TabContentsContainerGtk;
+
+class InstantOverlayControllerGtk : public InstantOverlayController {
+ public:
+  InstantOverlayControllerGtk(BrowserWindowGtk* window,
+                              TabContentsContainerGtk* contents);
+  virtual ~InstantOverlayControllerGtk();
+
+ private:
+  // Overridden from InstantOverlayController:
+  virtual void OverlayStateChanged(const InstantModel& model) OVERRIDE;
+
+  BrowserWindowGtk* const window_;
+  TabContentsContainerGtk* const contents_;
+
+  DISALLOW_COPY_AND_ASSIGN(InstantOverlayControllerGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_INSTANT_OVERLAY_CONTROLLER_GTK_H_