Reduce BrowsingDataRemover's dependencies on Chrome

chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc

Index: chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
diff --git a/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc b/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
index 96cd31d3a9481f446ae30fbc20edb82f1375fc92..2818aa42be11ab6e5a312cb32881091b96a70918 100644
--- a/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
+++ b/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
@@ -13,6 +13,7 @@
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/domain_reliability/service_factory.h"
+#include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/history/web_history_service_factory.h"
 #include "chrome/browser/io_thread.h"
@@ -475,6 +476,15 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
   }
 
   //////////////////////////////////////////////////////////////////////////////
+  // REMOVE_DOWNLOADS
+  if ((remove_mask & BrowsingDataRemover::REMOVE_DOWNLOADS) &&
+      may_delete_history) {
+    DownloadPrefs* download_prefs = DownloadPrefs::FromDownloadManager(
+        BrowserContext::GetDownloadManager(profile_));
+    download_prefs->SetSaveFilePath(download_prefs->DownloadPath());
+  }
+
+  //////////////////////////////////////////////////////////////////////////////
   // REMOVE_COOKIES
   // We ignore the REMOVE_COOKIES request if UNPROTECTED_WEB is not set,
   // so that callers who request REMOVE_SITE_DATA with PROTECTED_WEB