Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.h

Index: chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.h
diff --git a/chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.h b/chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.h
deleted file mode 100644
index 69a0bb4bac3d522539cefe4c99308fd9569b1625..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.h
+++ /dev/null
@@ -1,33 +0,0 @@
-// 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_COCOA_TAB_CONTENTS_INSTANT_PREVIEW_CONTROLLER_MAC_H_
-#define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_INSTANT_PREVIEW_CONTROLLER_MAC_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chrome/browser/instant/instant_preview_controller.h"
-
-class Browser;
-@class BrowserWindowController;
-@class PreviewableContentsController;
-
-class InstantPreviewControllerMac : public InstantPreviewController {
- public:
-  InstantPreviewControllerMac(Browser* browser,
-                              BrowserWindowController* window,
-                              PreviewableContentsController* preview);
-  virtual ~InstantPreviewControllerMac();
-
- private:
-  // Overridden from InstantPreviewController:
-  virtual void PreviewStateChanged(const InstantModel& model) OVERRIDE;
-
-  BrowserWindowController* const window_;
-  PreviewableContentsController* const preview_;
-
-  DISALLOW_COPY_AND_ASSIGN(InstantPreviewControllerMac);
-};
-
-#endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_INSTANT_PREVIEW_CONTROLLER_MAC_H_