Add LOCAL_ prefix to non-UMA histogram macros.

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 <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 765 matching lines @@
     // If we know the destination is being opened in the current tab,
     // we can easily get the tab ID.  (If it's being opened in a new
     // tab, we don't know the tab ID yet.)
     log.tab_id = delegate_->GetSessionID().id();
   }
   autocomplete_controller()->AddProvidersInfo(&log.providers_info);
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_OMNIBOX_OPENED_URL,
       content::Source<Profile>(profile_),
       content::Details<OmniboxLog>(&log));
-  HISTOGRAM_ENUMERATION("Omnibox.EventCount", 1, 2);
+  LOCAL_HISTOGRAM_BOOLEAN("Omnibox.EventCount", true);
   DCHECK(!last_omnibox_focus_.is_null())
       << "An omnibox focus should have occurred before opening a match.";
   UMA_HISTOGRAM_TIMES(kFocusToOpenTimeHistogram, now - last_omnibox_focus_);
 
   TemplateURLService* service =
       TemplateURLServiceFactory::GetForProfile(profile_);
   TemplateURL* template_url = match.GetTemplateURL(service, false);
   if (template_url) {
     if (match.transition == content::PAGE_TRANSITION_KEYWORD) {
       // The user is using a non-substituting keyword or is explicitly in
@@ skipping 678 matching lines @@
   // 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();
 
   delegate_->OnFocusChanged(focus_state_, reason);
 }