Use shorter max length for tooltip text on Windows

ui/views/corewm/tooltip_controller.cc

Index: ui/views/corewm/tooltip_controller.cc
diff --git a/ui/views/corewm/tooltip_controller.cc b/ui/views/corewm/tooltip_controller.cc
index bb28c54535c7a3ae057c31678d2e175e4667369b..8a20e247e6f3b15b74262f489736b863ecaae078 100644
--- a/ui/views/corewm/tooltip_controller.cc
+++ b/ui/views/corewm/tooltip_controller.cc
@@ -28,7 +28,12 @@ namespace {
 
 const int kTooltipTimeoutMs = 500;
 const int kDefaultTooltipShownTimeoutMs = 10000;
+#if defined(OS_WIN)
+// Drawing a long word in tooltip is very slow on Windows. crbug.com/513693
+const size_t kMaxTooltipLength = 1024;
+#else
 const size_t kMaxTooltipLength = 2048;
+#endif
 
 // Returns true if |target| is a valid window to get the tooltip from.
 // |event_target| is the original target from the event and |target| the window