base: Remove the string logging from CHECK().

base/synchronization/waitable_event_win.cc

Index: base/synchronization/waitable_event_win.cc
diff --git a/base/synchronization/waitable_event_win.cc b/base/synchronization/waitable_event_win.cc
index 993dbb1222427137fae077a5c0b9c3acd15bdae3..2860afe398261026dba674a5ae023d10cbbf1d68 100644
--- a/base/synchronization/waitable_event_win.cc
+++ b/base/synchronization/waitable_event_win.cc
@@ -31,7 +31,8 @@ WaitableEvent::WaitableEvent(ResetPolicy reset_policy,
 
 WaitableEvent::WaitableEvent(win::ScopedHandle handle)
     : handle_(std::move(handle)) {
-  CHECK(handle_.IsValid()) << "Tried to create WaitableEvent from NULL handle";
+  // Tried to create WaitableEvent from NULL handle
+  CHECK(handle_.IsValid());
 }
 
 WaitableEvent::~WaitableEvent() = default;
@@ -136,8 +137,8 @@ size_t WaitableEvent::WaitMany(WaitableEvent** events, size_t count) {
   base::debug::ScopedEventWaitActivity event_activity(events[0]);
 
   HANDLE handles[MAXIMUM_WAIT_OBJECTS];
-  CHECK_LE(count, static_cast<size_t>(MAXIMUM_WAIT_OBJECTS))
-      << "Can only wait on " << MAXIMUM_WAIT_OBJECTS << " with WaitMany";
+  // Can only wait on |MAXIMUM_WAIT_OBJECTS| with WaitMany
+  CHECK_LE(count, static_cast<size_t>(MAXIMUM_WAIT_OBJECTS));
 
   for (size_t i = 0; i < count; ++i)
     handles[i] = events[i]->handle();