Revert of Replace std::string::find with base::StartsWith when comparing cookie paths.

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 8a884e938a65991a15f8db8352f4a56e7e1291da..4f64b2f00c23d9ff86a5526c2dffa8b40541a684 100644
--- a/net/cookies/cookie_monster_unittest.cc
+++ b/net/cookies/cookie_monster_unittest.cc
@@ -1565,6 +1565,27 @@
   EXPECT_EQ("A2", cookies[3].Value());
   EXPECT_EQ("B1", cookies[4].Value());
   EXPECT_EQ("A1", cookies[5].Value());
+}
+
+TEST_F(CookieMonsterTest, DeleteCookieByName) {
+  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A1; path=/"));
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A2; path=/foo"));
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A3; path=/bar"));
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B1; path=/"));
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B2; path=/foo"));
+  EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B3; path=/bar"));
+
+  DeleteCookie(cm.get(), http_www_google_.AppendPath("foo/bar"), "A");
+
+  CookieList cookies = GetAllCookies(cm.get());
+  size_t expected_size = 4;
+  EXPECT_EQ(expected_size, cookies.size());
+  for (CookieList::iterator it = cookies.begin(); it != cookies.end(); ++it) {
+    EXPECT_NE("A1", it->Value());
+    EXPECT_NE("A2", it->Value());
+  }
 }
 
 // Tests importing from a persistent cookie store that contains duplicate