RTCStats operator== bugfix

webrtc/stats/rtcstats_unittest.cc

 /*
  *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 154 matching lines @@
   }
 
   RTCTestStats empty_stats_different_id("testId2", 123);
   EXPECT_NE(empty_stats, empty_stats_different_id);
   RTCTestStats empty_stats_different_timestamp("testId", 321);
   EXPECT_NE(empty_stats, empty_stats_different_timestamp);
 
   RTCChildStats child("childId", 42);
   RTCGrandChildStats grandchild("grandchildId", 42);
   EXPECT_NE(child, grandchild);
+
+  RTCChildStats stats_with_defined_member("leId", 0);
+  stats_with_defined_member.child_int = 0;
+  RTCChildStats stats_with_undefined_member("leId", 0);
+  EXPECT_NE(stats_with_defined_member, stats_with_undefined_member);
+  EXPECT_NE(stats_with_undefined_member, stats_with_defined_member);
 }
 
 TEST(RTCStatsTest, RTCStatsGrandChild) {
   RTCGrandChildStats stats("grandchild", 0.0);
   stats.child_int = 1;
   stats.grandchild_int = 2;
   int32_t sum = 0;
   for (const RTCStatsMemberInterface* member : stats.Members()) {
     sum += *member->cast_to<const RTCStatsMember<int32_t>>();
   }
@@ skipping 17 matching lines @@
 }
 
 TEST(RTCStatsDeathTest, InvalidCasting) {
   RTCGrandChildStats stats("grandchild", 0.0);
   EXPECT_DEATH(stats.cast_to<RTCChildStats>(), "");
 }
 
 #endif  // RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
 
 }  // namespace webrtc