NTP: add histogram to track New Tab page URL status.

chrome/browser/search/search_unittest.cc

 // Copyright (c) 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 "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/prefs/pref_service.h"
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   content::NavigationController& controller = contents->GetController();
   // Test virtual url chrome://newtab  for first NTP of a new profile
   EXPECT_TRUE(NavEntryIsInstantNTP(contents,
                                    controller.GetLastCommittedEntry()));
   // The new_tab_url gets set after the first NTP is visible.
   SetSearchProvider(true, false);
   EXPECT_TRUE(NavEntryIsInstantNTP(contents,
                                    controller.GetLastCommittedEntry()));
 }
 
-TEST_F(SearchTest, UseLocalNTPInIncognito) {
-  EXPECT_EQ(GURL(), chrome::GetNewTabPageURL(
-      profile()->GetOffTheRecordProfile()));
+TEST_F(SearchTest, NoRewriteInIncognito) {
+  profile()->ForceIncognito(true);
+  EXPECT_EQ(GURL(), chrome::GetNewTabPageURL(profile()));
+  GURL new_tab_url(chrome::kChromeUINewTabURL);
+  EXPECT_FALSE(HandleNewTabURLRewrite(&new_tab_url, profile()));
+  EXPECT_EQ(GURL(chrome::kChromeUINewTabURL), new_tab_url);
 }
 
 TEST_F(SearchTest, UseLocalNTPIfNTPURLIsInsecure) {
   // Set an insecure new tab page URL and verify that it's ignored.
   SetSearchProvider(true, true);
   EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl),
             chrome::GetNewTabPageURL(profile()));
+  GURL new_tab_url(chrome::kChromeUINewTabURL);
+  EXPECT_TRUE(HandleNewTabURLRewrite(&new_tab_url, profile()));
+  EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl), new_tab_url);
 }
 
 TEST_F(SearchTest, UseLocalNTPIfNTPURLIsNotSet) {
   // Set an insecure new tab page URL and verify that it's ignored.
   SetSearchProvider(false, true);
   EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl),
             chrome::GetNewTabPageURL(profile()));
+  GURL new_tab_url(chrome::kChromeUINewTabURL);
+  EXPECT_TRUE(HandleNewTabURLRewrite(&new_tab_url, profile()));
+  EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl), new_tab_url);
 }
 
 TEST_F(SearchTest, UseLocalNTPIfNTPURLIsBlockedForSupervisedUser) {
   // Block access to foo.com in the URL filter.
   ManagedUserService* managed_user_service =
       ManagedUserServiceFactory::GetForProfile(profile());
   ManagedModeURLFilter* url_filter =
       managed_user_service->GetURLFilterForUIThread();
   std::map<std::string, bool> hosts;
   hosts["foo.com"] = false;
   url_filter->SetManualHosts(&hosts);
 
   EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl),
             chrome::GetNewTabPageURL(profile()));
+  GURL new_tab_url(chrome::kChromeUINewTabURL);
+  EXPECT_TRUE(HandleNewTabURLRewrite(&new_tab_url, profile()));
+  EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl), new_tab_url);
   EXPECT_EQ(GURL(), GetInstantURL(profile(), kDisableStartMargin, false));
 }
 
 TEST_F(SearchTest, GetInstantURL) {
   // No Instant URL because "strk" is missing.
   SetDefaultInstantTemplateUrl(false);
   EXPECT_EQ(GURL(), GetInstantURL(profile(), kDisableStartMargin, false));
 
   // Set an Instant URL with a valid search terms replacement key.
   SetDefaultInstantTemplateUrl(true);
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 }
 
 TEST_F(OriginChipTest, CommandLineOriginChipLeadingMenuButton) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableOriginChipLeadingMenuButton);
   EXPECT_TRUE(ShouldDisplayOriginChip());
   EXPECT_EQ(ORIGIN_CHIP_LEADING_MENU_BUTTON, GetOriginChipPosition());
 }
 
 }  // namespace chrome