Allows prerendering to continue for offline requests even if the url was recently visited.

chrome/browser/prerender/prerender_unittest.cc

 // Copyright (c) 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 <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <utility>
 
@@ skipping 977 matching lines @@
   DummyPrerenderContents* prerender_contents =
       prerender_manager()->CreateNextPrerenderContents(
           url, FINAL_STATUS_USED);
   EXPECT_TRUE(AddSimplePrerender(url));
   EXPECT_TRUE(prerender_contents->prerendering_has_started());
   std::unique_ptr<PrerenderContents> entry =
       prerender_manager()->FindAndUseEntry(url);
   ASSERT_EQ(prerender_contents, entry.get());
 }
 
+// Tests that the offline origin is not restricted by recently visited check.
+TEST_F(PrerenderTest, OfflinePrerenderStartsWhenRecentlyVisited) {
+  GURL url("http://www.google.com/");
+
+  prerender_manager()->RecordNavigation(url);
+
+  DummyPrerenderContents* prerender_contents =
+      prerender_manager()->CreateNextPrerenderContents(
+          url, ORIGIN_OFFLINE, FINAL_STATUS_MANAGER_SHUTDOWN);
+  std::unique_ptr<PrerenderHandle> prerender_handle =
+      prerender_manager()->AddPrerenderForOffline(url, nullptr, kSize);
+  EXPECT_TRUE(prerender_handle);
+  EXPECT_TRUE(prerender_handle->IsPrerendering());
+  EXPECT_TRUE(prerender_contents->prerendering_has_started());
+}
+
 // Tests that the prerender manager matches include the fragment.
 TEST_F(PrerenderTest, FragmentMatchesTest) {
   GURL fragment_url("http://www.google.com/#test");
 
   DummyPrerenderContents* prerender_contents =
       prerender_manager()->CreateNextPrerenderContents(fragment_url,
                                                        FINAL_STATUS_USED);
   EXPECT_TRUE(AddSimplePrerender(fragment_url));
   EXPECT_TRUE(prerender_contents->prerendering_has_started());
   std::unique_ptr<PrerenderContents> entry =
@@ skipping 738 matching lines @@
   prerender_contents->SetPrerenderMode(PREFETCH_ONLY);
   EXPECT_TRUE(prerender_contents->IsValidHttpMethod("GET"));
   EXPECT_TRUE(prerender_contents->IsValidHttpMethod("HEAD"));
   EXPECT_FALSE(prerender_contents->IsValidHttpMethod("OPTIONS"));
   EXPECT_FALSE(prerender_contents->IsValidHttpMethod("POST"));
   EXPECT_FALSE(prerender_contents->IsValidHttpMethod("TRACE"));
   EXPECT_FALSE(prerender_contents->IsValidHttpMethod("WHATEVER"));
 }
 
 }  // namespace prerender