Index: head/www/chromium/files/patch-base_synchronization_lock__impl.h
===================================================================
--- head/www/chromium/files/patch-base_synchronization_lock__impl.h
+++ head/www/chromium/files/patch-base_synchronization_lock__impl.h
@@ -0,0 +1,16 @@
+--- base/synchronization/lock_impl.h.orig	2020-03-08 08:35:16 UTC
++++ base/synchronization/lock_impl.h
+@@ -67,10 +67,13 @@ void LockImpl::Unlock() {
+   ::ReleaseSRWLockExclusive(reinterpret_cast<PSRWLOCK>(&native_handle_));
+ }
+ #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wthread-safety-analysis"
+ void LockImpl::Unlock() {
+   int rv = pthread_mutex_unlock(&native_handle_);
+   DCHECK_EQ(rv, 0) << ". " << strerror(rv);
+ }
++#pragma GCC diagnostic pop
+ #endif
+ 
+ // This is an implementation used for AutoLock templated on the lock type.
Index: head/www/chromium/files/patch-third__party_webrtc_rtc__base_third__party_sigslot_sigslot.h
===================================================================
--- head/www/chromium/files/patch-third__party_webrtc_rtc__base_third__party_sigslot_sigslot.h
+++ head/www/chromium/files/patch-third__party_webrtc_rtc__base_third__party_sigslot_sigslot.h
@@ -0,0 +1,19 @@
+--- third_party/webrtc/rtc_base/third_party/sigslot/sigslot.h.orig	2020-03-03 18:55:31 UTC
++++ third_party/webrtc/rtc_base/third_party/sigslot/sigslot.h
+@@ -178,6 +178,8 @@ class multi_threaded_local {
+ #endif  // _SIGSLOT_HAS_WIN32_THREADS
+ 
+ #ifdef _SIGSLOT_HAS_POSIX_THREADS
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wthread-safety-analysis"
+ // The multi threading policies only get compiled in if they are enabled.
+ class multi_threaded_global {
+  public:
+@@ -201,6 +203,7 @@ class multi_threaded_local {
+  private:
+   pthread_mutex_t m_mutex;
+ };
++#pragma GCC diagnostic pop
+ #endif  // _SIGSLOT_HAS_POSIX_THREADS
+ 
+ template <class mt_policy>