Add fail check for GetKeyboardState() in Windows KeyMap

ui/events/keycodes/platform_key_map_win.cc

Index: ui/events/keycodes/platform_key_map_win.cc
diff --git a/ui/events/keycodes/platform_key_map_win.cc b/ui/events/keycodes/platform_key_map_win.cc
index 52a44d55838d9c301c8d8caa13ad91f7e55fed1c..6a95fd7b2f3cdb6a2f3a89047bec7690ba372ec2 100644
--- a/ui/events/keycodes/platform_key_map_win.cc
+++ b/ui/events/keycodes/platform_key_map_win.cc
@@ -163,6 +163,10 @@ void PlatformKeyMap::UpdateLayout(HKL layout) {
   if (layout == keyboard_layout_)
     return;
 
+  BYTE keyboard_state_to_restore[256];
+  if (!::GetKeyboardState(keyboard_state_to_restore))
+    return;
+
   // TODO(chongz): Optimize layout switching (see crbug.com/587147).
   keyboard_layout_ = layout;
   code_to_key_.clear();
@@ -170,9 +174,6 @@ void PlatformKeyMap::UpdateLayout(HKL layout) {
   // US: 428, French: 554, Persian: 434, Vietnamese: 1388
   code_to_key_.reserve(500);
 
-  BYTE keyboard_state_to_restore[256];
-  ::GetKeyboardState(keyboard_state_to_restore);
-
   for (int eindex = 0; eindex <= kModifierFlagsCombinations; ++eindex) {
     BYTE keyboard_state[256];
     memset(keyboard_state, 0, sizeof(keyboard_state));