Adds unit tests for offline_pages::PrerenderAdapter calling PrerenderManager.

chrome/browser/ui/search/instant_search_prerenderer_unittest.cc

 // Copyright 2013 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 "chrome/browser/ui/search/instant_search_prerenderer.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
@@ skipping 151 matching lines @@
     ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial("EmbeddedSearch",
                                                        "Group1 strk:20"));
     InstantUnitTestBase::SetUp();
   }
 
   void Init(bool prerender_search_results_base_page,
             bool call_did_finish_load) {
     AddTab(browser(), GURL(url::kAboutBlankURL));
 
     PrerenderManagerFactory::GetForProfile(browser()->profile())->
-        SetPrerenderContentsFactory(
+        SetPrerenderContentsFactoryForTest(
             new DummyPrerenderContentsFactory(call_did_finish_load));
     if (prerender_search_results_base_page) {
       content::SessionStorageNamespace* session_storage_namespace =
           GetActiveWebContents()->GetController().
               GetDefaultSessionStorageNamespace();
       InstantSearchPrerenderer* prerenderer = GetInstantSearchPrerenderer();
       prerenderer->Init(session_storage_namespace, gfx::Size(640, 480));
       EXPECT_NE(static_cast<PrerenderHandle*>(NULL), prerender_handle());
     }
   }
@@ skipping 355 matching lines @@
   std::tuple<base::string16, EmbeddedSearchRequestParams> params;
   ChromeViewMsg_SearchBoxSubmit::Read(message, &params);
   EXPECT_EQ("foo", base::UTF16ToASCII(std::get<0>(params)));
   EXPECT_EQ("f", base::UTF16ToASCII(std::get<1>(params).original_query));
   EXPECT_EQ("utf-8", base::UTF16ToASCII(std::get<1>(params).input_encoding));
   EXPECT_EQ("", base::UTF16ToASCII(std::get<1>(params).rlz_parameter_value));
   EXPECT_EQ("chrome...0",
             base::UTF16ToASCII(std::get<1>(params).assisted_query_stats));
 }
 #endif