Update some callers to use more direct ways of constructing IPAddress from well known literals.

net/base/ip_address_unittest.cc

Index: net/base/ip_address_unittest.cc
diff --git a/net/base/ip_address_unittest.cc b/net/base/ip_address_unittest.cc
index dffb905efead884f313331ff9ec23cd18d3cbf1d..2863c6b31a02f16b683e65d7e2618b84fcafc382 100644
--- a/net/base/ip_address_unittest.cc
+++ b/net/base/ip_address_unittest.cc
@@ -82,6 +82,16 @@ TEST(IPAddressTest, IsZero) {
   EXPECT_FALSE(empty_address.IsZero());
 }
 
+TEST(IPAddressTest, AllZeros) {
+  EXPECT_TRUE(IPAddress::AllZeros(0).empty());
+
+  EXPECT_EQ(3u, IPAddress::AllZeros(3).size());
+  EXPECT_TRUE(IPAddress::AllZeros(3).IsZero());
+
+  EXPECT_EQ("0.0.0.0", IPAddress::IPv4AllZeros().ToString());
+  EXPECT_EQ("::", IPAddress::IPv6AllZeros().ToString());
+}
+
 TEST(IPAddressTest, ToString) {
   uint8_t addr1[4] = {0, 0, 0, 0};
   IPAddress ip_address1(addr1);