Refactor transmission of security of source and http_only mods in cookie_monster.cc.

net/cookies/cookie_monster_unittest.cc

Index: net/cookies/cookie_monster_unittest.cc
diff --git a/net/cookies/cookie_monster_unittest.cc b/net/cookies/cookie_monster_unittest.cc
index 04d69fdcf7d77710abcd851f117f07154e534954..af8945fe4a460af67e7739cd8464bb89f8d70cd3 100644
--- a/net/cookies/cookie_monster_unittest.cc
+++ b/net/cookies/cookie_monster_unittest.cc
@@ -2856,7 +2856,7 @@ TEST_F(CookieMonsterTest, ControlCharacterPurge) {
 // Test that cookie source schemes are histogrammed correctly.
 TEST_F(CookieMonsterTest, CookieSourceHistogram) {
   base::HistogramTester histograms;
-  const std::string cookie_source_histogram = "Cookie.CookieSourceScheme";
+  const std::string cookie_source_histogram = "Cookie.CookieSourceScheme2";
 
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
   std::unique_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));