Expand event timestamp validation check to more platforms

ui/events/event_utils.cc

Index: ui/events/event_utils.cc
diff --git a/ui/events/event_utils.cc b/ui/events/event_utils.cc
index 2e34a82477e0ed6a591b0e325c4a7d1dd34a4a71..f60daf6d991a24ba55a61c24d5d27d9535946d2b 100644
--- a/ui/events/event_utils.cc
+++ b/ui/events/event_utils.cc
@@ -62,25 +62,20 @@ int RegisterCustomEventType() {
 }
 
 void ValidateEventTimeClock(base::TimeTicks* timestamp) {
-// Restrict this validation to DCHECK builds except when using X11 which is
-// known to provide bogus timestamps that require correction (crbug.com/611950).
-#if defined(USE_X11) || DCHECK_IS_ON()
   if (base::debug::BeingDebugged())
     return;
 
   base::TimeTicks now = EventTimeForNow();
   int64_t delta = (now - *timestamp).InMilliseconds();
-  if (delta < 0 || delta > 60 * 1000) {
-    UMA_HISTOGRAM_BOOLEAN("Event.TimestampHasValidTimebase", false);
+  bool has_valid_timebase = delta >= 0 && delta <= 60 * 1000;
+  UMA_HISTOGRAM_BOOLEAN("Event.TimestampHasValidTimebase.Browser",
+                        has_valid_timebase);
+
 #if defined(USE_X11)
+  // Restrict this correction to X11 which is known to provide bogus timestamps
+  // that require correction (crbug.com/611950).
+  if (!has_valid_timebase)
     *timestamp = now;
-#else
-    NOTREACHED() << "Unexpected event timestamp, now:" << now
-                 << " event timestamp:" << *timestamp;
-#endif
-  }
-
-  UMA_HISTOGRAM_BOOLEAN("Event.TimestampHasValidTimebase", true);
 #endif
 }