InstantExtended: Add js api for custom logo.

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"
 
@@ skipping 14 matching lines @@
   // Show the preview with the given |height|.
   virtual void ShowInstant(int height, InstantSizeUnits units) = 0;
 
   // Hide any preview currently being shown.
   virtual void HideInstant() = 0;
 
   // 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;
 
+  // Indicates whether the search provider has a custom logo for the NTP.
+  virtual void SetHasCustomLogo(bool has_logo) = 0;
+
   // Autocomplete the Instant suggested |text| into the omnibox, using the
   // specified |behavior| (see instant_types.h for details).
   virtual void SetSuggestedText(const string16& text,
                                 InstantCompleteBehavior behavior) = 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_