Fixes for turning on offliner request.

chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc

Index: chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc
diff --git a/chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc b/chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc
index eef086b15126e5ab7b1c4fca8515074fb65088b6..bd04903df1693625222c45fd528041a7250343fa 100644
--- a/chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc
+++ b/chrome/browser/android/offline_pages/prerendering_offliner_unittest.cc
@@ -36,7 +36,7 @@ class MockPrerenderingLoader : public PrerenderingLoader {
         mock_loaded_(false) {}
   ~MockPrerenderingLoader() override {}
 
-  bool LoadPage(const GURL& url, const LoadPageCallback& callback) override {
+  bool LoadPage(const GURL& url, LoadPageCallback callback) override {
     mock_loading_ = true;
     load_page_callback_ = callback;
     return mock_loading_;