(tiny) Temporarily disable lock instrumentation

base/synchronization/lock_impl_win.cc

Index: base/synchronization/lock_impl_win.cc
diff --git a/base/synchronization/lock_impl_win.cc b/base/synchronization/lock_impl_win.cc
index 31f95f4e394ba6af3bc52e8b4472251a7d35740b..ef0326753d0a98fa6fa277be46b55eec826aa2e9 100644
--- a/base/synchronization/lock_impl_win.cc
+++ b/base/synchronization/lock_impl_win.cc
@@ -18,7 +18,8 @@ bool LockImpl::Try() {
 }
 
 void LockImpl::Lock() {
-  base::debug::ScopedLockAcquireActivity lock_activity(this);
+  // Commented out pending https://crbug.com/652432
+  // base::debug::ScopedLockAcquireActivity lock_activity(this);
   ::AcquireSRWLockExclusive(&native_handle_);
 }