Split Android-specific dependency from BackgroundLoaderOffliner. Create a subfolder of c/b/offline_…

chrome/browser/android/offline_pages/prerendering_offliner.cc

Index: chrome/browser/android/offline_pages/prerendering_offliner.cc
diff --git a/chrome/browser/android/offline_pages/prerendering_offliner.cc b/chrome/browser/android/offline_pages/prerendering_offliner.cc
index 8a63042988fa7217dd790dd4457820188df81dbe..7466d60485735abfbe2ac8e2feb41afcf82d8c94 100644
--- a/chrome/browser/android/offline_pages/prerendering_offliner.cc
+++ b/chrome/browser/android/offline_pages/prerendering_offliner.cc
@@ -278,6 +278,11 @@ bool PrerenderingOffliner::Cancel(const CancelCallback& callback) {
   return true;
 }
 
+void PrerenderingOffliner::TerminateLoadIfInProgress() {
+  // This is not implemented since this offliner is deprecated and

[dewittj, 2017/05/24 23:24:40]

Is this different behavior than we have today?

[Dmitry Titov, 2017/05/25 23:24:12]

No, it directly uses Android class. I hope we will remove this file before it'll
be necessary to refactor it as well.

+  // will be removed shortly.
+}
+
 bool PrerenderingOffliner::HandleTimeout(int64_t request_id) {
   if (pending_request_) {
     DCHECK(request_id == pending_request_->request_id());