Define QuicServerId::operator!=(). PiperOrigin-RevId: 378922107

diff --git a/quic/core/crypto/quic_crypto_client_config.cc b/quic/core/crypto/quic_crypto_client_config.cc
index a3ec4ee..99f9279 100644
--- a/quic/core/crypto/quic_crypto_client_config.cc
+++ b/quic/core/crypto/quic_crypto_client_config.cc

@@ -848,7 +848,7 @@
   QuicServerId suffix_server_id(canonical_suffixes_[i], server_id.port(),
                                 server_id.privacy_mode_enabled());
   auto it = canonical_server_map_.lower_bound(suffix_server_id);
-  if (it == canonical_server_map_.end() || !(it->first == suffix_server_id)) {
+  if (it == canonical_server_map_.end() || it->first != suffix_server_id) {
     // This is the first host we've seen which matches the suffix, so make it
     // canonical.  Use |it| as position hint for faster insertion.
     canonical_server_map_.insert(

diff --git a/quic/core/quic_server_id.cc b/quic/core/quic_server_id.cc
index 0eb5cc3..0c03451 100644
--- a/quic/core/quic_server_id.cc
+++ b/quic/core/quic_server_id.cc

@@ -31,4 +31,8 @@
          host_ == other.host_ && port_ == other.port_;
 }
 
+bool QuicServerId::operator!=(const QuicServerId& other) const {
+  return !(*this == other);
+}
+
 }  // namespace quic

diff --git a/quic/core/quic_server_id.h b/quic/core/quic_server_id.h
index ef900c1..fa6b3c3 100644
--- a/quic/core/quic_server_id.h
+++ b/quic/core/quic_server_id.h

@@ -23,10 +23,12 @@
                bool privacy_mode_enabled);
   ~QuicServerId();
 
-  // Needed to be an element of std::set.
+  // Needed to be an element of an ordered container.
   bool operator<(const QuicServerId& other) const;
   bool operator==(const QuicServerId& other) const;
 
+  bool operator!=(const QuicServerId& other) const;
+
   const std::string& host() const { return host_; }
 
   uint16_t port() const { return port_; }

diff --git a/quic/core/quic_server_id_test.cc b/quic/core/quic_server_id_test.cc
index 752b14d..1ad425a 100644
--- a/quic/core/quic_server_id_test.cc
+++ b/quic/core/quic_server_id_test.cc

@@ -86,6 +86,10 @@
     QuicServerId b_10_https_right_private("b.com", 10, right_privacy);
     QuicServerId b_11_https_right_private("b.com", 11, right_privacy);
 
+    EXPECT_NE(a_10_https_right_private, a_11_https_right_private);
+    EXPECT_NE(a_10_https_right_private, b_10_https_right_private);
+    EXPECT_NE(a_10_https_right_private, b_11_https_right_private);
+
     QuicServerId new_a_10_https_left_private("a.com", 10, left_privacy);
     QuicServerId new_a_11_https_left_private("a.com", 11, left_privacy);
     QuicServerId new_b_10_https_left_private("b.com", 10, left_privacy);
@@ -106,13 +110,13 @@
 
     QuicServerId new_a_10_https_left_private("a.com", 10, false);
 
-    EXPECT_FALSE(new_a_10_https_left_private == a_11_https_right_private);
-    EXPECT_FALSE(new_a_10_https_left_private == b_10_https_right_private);
-    EXPECT_FALSE(new_a_10_https_left_private == b_11_https_right_private);
+    EXPECT_NE(new_a_10_https_left_private, a_11_https_right_private);
+    EXPECT_NE(new_a_10_https_left_private, b_10_https_right_private);
+    EXPECT_NE(new_a_10_https_left_private, b_11_https_right_private);
   }
   QuicServerId a_10_https_private("a.com", 10, true);
   QuicServerId new_a_10_https_no_private("a.com", 10, false);
-  EXPECT_FALSE(new_a_10_https_no_private == a_10_https_private);
+  EXPECT_NE(new_a_10_https_no_private, a_10_https_private);
 }
 
 }  // namespace