Check entry exists in DeviceDataManagerX11::UpdateDeviceList().

ui/events/devices/x11/device_data_manager_x11.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/devices/x11/device_data_manager_x11.h"
 
 #include <stddef.h>
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xlib.h>
@@ skipping 662 matching lines @@
   return false;
 }
 
 bool DeviceDataManagerX11::GetDataRange(int deviceid,
                                         const DataType type,
                                         double* min,
                                         double* max) {
   CHECK_GE(deviceid, 0);
   if (deviceid >= kMaxDeviceNum)
     return false;
+  if (valuator_lookup_[deviceid].empty())
+    return false;
   if (valuator_lookup_[deviceid][type] >= 0) {
     *min = valuator_min_[deviceid][type];
     *max = valuator_max_[deviceid][type];
     return true;
   }
   return false;
 }
 
 void DeviceDataManagerX11::SetDeviceListForTest(
     const std::vector<int>& touchscreen,
@@ skipping 206 matching lines @@
     } else {
       keyboards.erase(it);
       ++blocked_iter;
     }
   }
   // Notify base class of updated list.
   DeviceDataManager::OnKeyboardDevicesUpdated(keyboards);
 }
 
 }  // namespace ui