diff --git a/system_wrappers/BUILD.gn b/system_wrappers/BUILD.gn
index e70aea429c..4c09164abd 100644
--- a/system_wrappers/BUILD.gn
+++ b/system_wrappers/BUILD.gn
@@ -91,11 +91,6 @@ rtc_static_library("system_wrappers") {
     deps += [ "../rtc_base:rtc_base" ]
   }
 
-  if (is_win && is_clang) {
-    # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
-    suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
-  }
-
   deps += [
     "../rtc_base:rtc_base_approved",
     "../rtc_base:rtc_numerics",
@@ -218,11 +213,6 @@ if (rtc_include_tests) {
       sources += [ "source/event_timer_posix_unittest.cc" ]
     }
 
-    if (!build_with_chromium && is_clang) {
-      # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
-      suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
-    }
-
     deps = [
       ":metrics_api",
       ":metrics_default",
diff --git a/system_wrappers/source/clock.cc b/system_wrappers/source/clock.cc
index fd73531d7b..c9940fbe99 100644
--- a/system_wrappers/source/clock.cc
+++ b/system_wrappers/source/clock.cc
@@ -90,7 +90,7 @@ class WindowsRealTimeClock : public RealTimeClock {
         num_timer_wraps_(0),
         ref_point_(GetSystemReferencePoint()) {}
 
-  virtual ~WindowsRealTimeClock() {}
+  ~WindowsRealTimeClock() override {}
 
  protected:
   struct ReferencePoint {
diff --git a/system_wrappers/source/event_timer_posix_unittest.cc b/system_wrappers/source/event_timer_posix_unittest.cc
index e0c5cbc477..88fd90aef8 100644
--- a/system_wrappers/source/event_timer_posix_unittest.cc
+++ b/system_wrappers/source/event_timer_posix_unittest.cc
@@ -35,7 +35,7 @@ class EventTimerPosixTest : public testing::Test, public EventTimerPosix {
         main_event_(false, true),
         process_thread_id_(0),
         process_thread_(nullptr) {}
-  virtual ~EventTimerPosixTest() {}
+  ~EventTimerPosixTest() override {}
 
   rtc::PlatformThread* CreateThread() override {
     EXPECT_TRUE(process_thread_ == nullptr);
diff --git a/system_wrappers/source/event_timer_win.h b/system_wrappers/source/event_timer_win.h
index 5631a3fbc4..0b4dff60e0 100644
--- a/system_wrappers/source/event_timer_win.h
+++ b/system_wrappers/source/event_timer_win.h
@@ -22,13 +22,13 @@ namespace webrtc {
 class EventTimerWin : public EventTimerWrapper {
  public:
   EventTimerWin();
-  virtual ~EventTimerWin();
+  ~EventTimerWin() override;
 
-  virtual EventTypeWrapper Wait(unsigned long max_time);
-  virtual bool Set();
+  EventTypeWrapper Wait(unsigned long max_time) override;
+  bool Set() override;
 
-  virtual bool StartTimer(bool periodic, unsigned long time);
-  virtual bool StopTimer();
+  bool StartTimer(bool periodic, unsigned long time) override;
+  bool StopTimer() override;
 
  private:
   HANDLE event_;
diff --git a/system_wrappers/source/metrics_default_unittest.cc b/system_wrappers/source/metrics_default_unittest.cc
index fa253a9bfe..7491a2f513 100644
--- a/system_wrappers/source/metrics_default_unittest.cc
+++ b/system_wrappers/source/metrics_default_unittest.cc
@@ -54,7 +54,7 @@ class MetricsDefaultTest : public ::testing::Test {
   MetricsDefaultTest() {}
 
  protected:
-  virtual void SetUp() { metrics::Reset(); }
+  void SetUp() override { metrics::Reset(); }
 };
 
 TEST_F(MetricsDefaultTest, Reset) {
diff --git a/system_wrappers/source/metrics_unittest.cc b/system_wrappers/source/metrics_unittest.cc
index 53d43cd2b1..4218ad751d 100644
--- a/system_wrappers/source/metrics_unittest.cc
+++ b/system_wrappers/source/metrics_unittest.cc
@@ -29,7 +29,7 @@ class MetricsTest : public ::testing::Test {
   MetricsTest() {}
 
  protected:
-  virtual void SetUp() { metrics::Reset(); }
+  void SetUp() override { metrics::Reset(); }
 };
 
 TEST_F(MetricsTest, InitiallyNoSamples) {