Make TestingProfile auto-create incognito profiles.

chrome/browser/extensions/api/cookies/cookies_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.
 
 // Tests common functionality used by the Chrome Extensions Cookies API
 // implementation.
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "base/values.h"
@@ skipping 22 matching lines @@
   const bool matches;
 };
 
 }  // namespace
 
 class ExtensionCookiesTest : public testing::Test {
 };
 
 TEST_F(ExtensionCookiesTest, StoreIdProfileConversion) {
   TestingProfile::Builder profile_builder;
-  TestingProfile::Builder otr_profile_builder;
-  otr_profile_builder.SetIncognito();
   scoped_ptr<TestingProfile> profile = profile_builder.Build();
-  scoped_ptr<TestingProfile> otr_profile = otr_profile_builder.Build();
-  otr_profile->SetOriginalProfile(profile.get());
-  profile->SetOffTheRecordProfile(otr_profile.PassAs<Profile>());
+  // Trigger early creation of off-the-record profile.
+  EXPECT_TRUE(profile->GetOffTheRecordProfile());
 
   EXPECT_EQ(std::string("0"),
             cookies_helpers::GetStoreIdFromProfile(profile.get()));
   EXPECT_EQ(profile.get(),
             cookies_helpers::ChooseProfileFromStoreId(
                 "0", profile.get(), true));
   EXPECT_EQ(profile.get(),
             cookies_helpers::ChooseProfileFromStoreId(
                 "0", profile.get(), false));
   EXPECT_EQ(profile->GetOffTheRecordProfile(),
@@ skipping 134 matching lines @@
                                         false,
                                         net::COOKIE_PRIORITY_DEFAULT);
   scoped_ptr<Cookie> cookie(
       cookies_helpers::CreateCookie(
           canonical_cookie, "some cookie store"));
   EXPECT_EQ(std::string("011Q255bNX_1!yd\xEF\xBF\xBD" "e+"), cookie->value);
   EXPECT_EQ(std::string(), cookie->path);
 }
 
 }  // namespace extensions