Cleanup: Change LogMostVisitedImpression|Navigation APIs to take an enum

chrome/browser/ui/search/search_tab_helper.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/search/search_tab_helper.h"
 
 #include <memory>
 #include <set>
 
 #include "base/macros.h"
@@ skipping 459 matching lines @@
 void SearchTabHelper::OnLogEvent(NTPLoggingEventType event,
                                  base::TimeDelta time) {
 // TODO(kmadhusu): Move platform specific code from here and get rid of #ifdef.
 #if !defined(OS_ANDROID)
   NTPUserDataLogger::GetOrCreateFromWebContents(web_contents())
       ->LogEvent(event, time);
 #endif
 }
 
 void SearchTabHelper::OnLogMostVisitedImpression(
-    int position, const base::string16& provider) {
+    int position, NTPLoggingTileSource tile_source) {
 // TODO(kmadhusu): Move platform specific code from here and get rid of #ifdef.
 #if !defined(OS_ANDROID)
   NTPUserDataLogger::GetOrCreateFromWebContents(
-      web_contents())->LogMostVisitedImpression(position, provider);
+      web_contents())->LogMostVisitedImpression(position, tile_source);
 #endif
 }
 
 void SearchTabHelper::OnLogMostVisitedNavigation(
-    int position, const base::string16& provider) {
+    int position, NTPLoggingTileSource tile_source) {
 // TODO(kmadhusu): Move platform specific code from here and get rid of #ifdef.
 #if !defined(OS_ANDROID)
   NTPUserDataLogger::GetOrCreateFromWebContents(
-      web_contents())->LogMostVisitedNavigation(position, provider);
+      web_contents())->LogMostVisitedNavigation(position, tile_source);
 #endif
 }
 
 void SearchTabHelper::PasteIntoOmnibox(const base::string16& text) {
 // TODO(kmadhusu): Move platform specific code from here and get rid of #ifdef.
 #if !defined(OS_ANDROID)
   OmniboxView* omnibox = GetOmniboxView();
   if (!omnibox)
     return;
   // The first case is for right click to paste, where the text is retrieved
@@ skipping 77 matching lines @@
 
 bool SearchTabHelper::IsInputInProgress() const {
   OmniboxView* omnibox = GetOmniboxView();
   return !model_.mode().is_ntp() && omnibox &&
       omnibox->model()->focus_state() == OMNIBOX_FOCUS_VISIBLE;
 }
 
 OmniboxView* SearchTabHelper::GetOmniboxView() const {
   return delegate_ ? delegate_->GetOmniboxView() : NULL;
 }