Remove unused / unnecessary stuff from Instant.

chrome/browser/instant/instant_controller_delegate.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_INSTANT_INSTANT_CONTROLLER_DELEGATE_H_
-#define CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_DELEGATE_H_
-
-#include "base/string16.h"
-#include "chrome/common/instant_types.h"
-
-class TabContents;
-
-namespace gfx {
-class Rect;
-}
-
-// InstantController calls these methods on its delegate (Browser, via
-// BrowserInstantController) to ask for the Instant preview to be shown,
-// hidden, etc. In the following methods, if a TabContents argument is
-// explicitly supplied, the delegate MUST use it. Otherwise, the preview
-// TabContents can be gotten by calling InstantController::GetPreviewContents()
-// (note that it may return NULL).
-class InstantControllerDelegate {
- public:
-  // Commit the |preview| by merging it into the active tab or adding it as a
-  // new tab, based on |in_new_tab|. Delegate takes ownership of |preview|.
-  virtual void CommitInstant(TabContents* preview, bool in_new_tab) = 0;
-
-  // Autocomplete the Instant |suggestion| into the omnibox.
-  virtual void SetInstantSuggestion(const InstantSuggestion& suggestion) = 0;
-
-  // Return the bounds that the preview is placed at, in screen coordinates.
-  virtual gfx::Rect GetInstantBounds() = 0;
-
-  // Notification that the preview gained focus, usually due to the user
-  // clicking on it.
-  virtual void InstantPreviewFocused() = 0;
-
-  // Return the currently active tab, over which any preview would be shown.
-  virtual TabContents* GetActiveTabContents() const = 0;
-
- protected:
-  virtual ~InstantControllerDelegate() {}
-};
-
-#endif  // CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_DELEGATE_H_