Revert of [NoStatePrefetch] Kill renderer after preload scanning

chrome/browser/prerender/prerender_manager.cc

Index: chrome/browser/prerender/prerender_manager.cc
diff --git a/chrome/browser/prerender/prerender_manager.cc b/chrome/browser/prerender/prerender_manager.cc
index 6a31052d8aee340de1d46a29649071c91aa5a00a..c51c7c3ace393737801607c3d802fd2a56ef9cf4 100644
--- a/chrome/browser/prerender/prerender_manager.cc
+++ b/chrome/browser/prerender/prerender_manager.cc
@@ -716,19 +716,6 @@
   return web_contents ? GetPrerenderContents(web_contents) : nullptr;
 }
 
-PrerenderContents* PrerenderManager::GetPrerenderContentsForProcess(
-    int render_process_id) const {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  for (auto& prerender_data : active_prerenders_) {
-    PrerenderContents* prerender_contents = prerender_data->contents();
-    if (prerender_contents->GetRenderViewHost()->GetProcess()->GetID() ==
-        render_process_id) {
-      return prerender_contents;
-    }
-  }
-  return nullptr;
-}
-
 std::vector<WebContents*> PrerenderManager::GetAllPrerenderingContents() const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   std::vector<WebContents*> result;