[OriginChip] Add animations for the hiding and showing of the chip.

chrome/browser/ui/omnibox/omnibox_view.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.
 
 // This file defines the interface class OmniboxView.  Each toolkit will
 // implement the edit view differently, so that code is inherently platform
 // specific.  However, the OmniboxEditModel needs to do some communication with
 // the view.  Since the model is shared between platforms, we need to define an
 // interface that all view implementations will share.
 
@@ skipping 119 matching lines @@
   virtual void GetSelectionBounds(size_t* start, size_t* end) const = 0;
 
   // Selects all the text in the edit.  Use this in place of SetSelAll() to
   // avoid selecting the "phantom newline" at the end of the edit.
   virtual void SelectAll(bool reversed) = 0;
 
   // Sets focus, disables search term replacement, reverts the omnibox, and
   // selects all.
   void ShowURL();
 
+  // Enables search term replacement and reverts the omnibox.
+  void HideURL();
+
   // Re-enables search term replacement on the ToolbarModel, and reverts the
   // edit and popup back to their unedited state (permanent text showing, popup
   // closed, no user input in progress).
   virtual void RevertAll();
 
   // Like RevertAll(), but does not touch the search term replacement state.
   void RevertWithoutResettingSearchTermReplacement();
 
   // Updates the autocomplete popup and other state after the text has been
   // changed by the user.
@@ skipping 125 matching lines @@
   // |model_| can be NULL in tests.
   scoped_ptr<OmniboxEditModel> model_;
   OmniboxEditController* controller_;
 
   // The object that handles additional command functionality exposed on the
   // edit, such as invoking the keyword editor.
   CommandUpdater* command_updater_;
 };
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_VIEW_H_