Add abstractions that let embedders drive tests of WebContents.

chrome/browser/instant/instant_controller.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_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 11 matching lines @@
 #include "googleurl/src/gurl.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 struct AutocompleteMatch;
 class InstantDelegate;
 class InstantLoader;
 class InstantTest;
 class PrefService;
 class Profile;
-class TabContents;
 class TabContentsWrapper;
 class TemplateURL;
 class TemplateURLService;
 
 // InstantController maintains a TabContents that is intended to give a preview
 // of a URL. InstantController is owned by Browser.
 //
 // At any time the TabContents maintained by InstantController may be destroyed
 // by way of |DestroyPreviewContents|, which results in |HideInstant| being
 // invoked on the delegate. Similarly the preview may be committed at any time
@@ skipping 218 matching lines @@
   // The URL of the most recent match passed to |Update|.
   GURL last_url_;
 
   // The most recent user_text passed to |Update|.
   string16 last_user_text_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantController);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_H_