Add UMA stats for tracking bookmark depth

chrome/browser/ui/omnibox/omnibox_edit_model.cc

 // 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.
 
 #include "chrome/browser/ui/omnibox/omnibox_edit_model.h"
 
 #include <string>
 
 #include "base/auto_reset.h"
 #include "base/format_macros.h"
@@ skipping 774 matching lines @@
       controller_->OnAutocompleteAccept(
           destination_url, disposition,
           content::PageTransitionFromInt(
               match.transition | content::PAGE_TRANSITION_FROM_ADDRESS_BAR));
       if (observer->load_state() != OmniboxNavigationObserver::LOAD_NOT_SEEN)
         ignore_result(observer.release());  // The observer will delete itself.
     }
   }
 
   if (match.starred)
-    RecordBookmarkLaunch(BOOKMARK_LAUNCH_LOCATION_OMNIBOX);
+    RecordBookmarkLaunch(NULL, BOOKMARK_LAUNCH_LOCATION_OMNIBOX);
 }
 
 bool OmniboxEditModel::AcceptKeyword(EnteredKeywordModeMethod entered_method) {
   DCHECK(is_keyword_hint_ && !keyword_.empty());
 
   autocomplete_controller()->Stop(false);
   is_keyword_hint_ = false;
 
   if (popup_model()->IsOpen())
     popup_model()->SetSelectedLineState(OmniboxPopupModel::KEYWORD);
@@ skipping 577 matching lines @@
     instant->OmniboxFocusChanged(state, reason, NULL);
 
   // Update state and notify view if the omnibox has focus and the caret
   // visibility changed.
   const bool was_caret_visible = is_caret_visible();
   focus_state_ = state;
   if (focus_state_ != OMNIBOX_FOCUS_NONE &&
       is_caret_visible() != was_caret_visible)
     view_->ApplyCaretVisibility();
 }