ozone: evdev: Squelch unknown key errors for mouse & digi from gestures

ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.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/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h"
 
 #include <gestures/gestures.h>
 #include <libevdev/libevdev.h>
 
 #include "base/strings/stringprintf.h"
@@ skipping 419 matching lines @@
 
 void GestureInterpreterLibevdevCros::DispatchChangedKeys(Evdev* evdev,
                                                          const timeval& time) {
   unsigned long key_state_diff[EVDEV_BITS_TO_LONGS(KEY_CNT)];
 
   // Find changed keys.
   for (unsigned long i = 0; i < arraysize(key_state_diff); ++i)
     key_state_diff[i] = evdev->key_state_bitmask[i] ^ prev_key_state_[i];
 
   // Dispatch events for changed keys.
-  for (unsigned long i = 0; i < KEY_CNT; ++i) {
-    if (EvdevBitIsSet(key_state_diff, i)) {
-      bool value = EvdevBitIsSet(evdev->key_state_bitmask, i);
-      keyboard_->OnKeyChange(i, value);
+  for (unsigned long key = 0; key < KEY_CNT; ++key) {
+    if (EvdevBitIsSet(key_state_diff, key)) {
+      bool value = EvdevBitIsSet(evdev->key_state_bitmask, key);
+
+      // Mouse buttons are handled by DispatchMouseButton.
+      if (key >= BTN_MOUSE && key < BTN_JOYSTICK)
+        continue;
+
+      // Ignore digi buttons (e.g. BTN_TOOL_FINGER).
+      if (key >= BTN_DIGI && key < BTN_WHEEL)
+        continue;
+
+      // Dispatch key press or release to keyboard.
+      keyboard_->OnKeyChange(key, value);
     }
   }
 
   // Update internal key state.
   for (unsigned long i = 0; i < EVDEV_BITS_TO_LONGS(KEY_CNT); ++i)
     prev_key_state_[i] = evdev->key_state_bitmask[i];
 }
 
 }  // namespace ui