Add palm suppression feature to EventConverterEvdev

ui/events/ozone/evdev/event_converter_evdev.h

 // 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.
 
 #ifndef UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 59 matching lines @@
 
   // Returns true if the converter is used for a mouse device;
   virtual bool HasMouse() const;
 
   // Returns true if the converter is used for a touchpad device.
   virtual bool HasTouchpad() const;
 
   // Returns true if the converter is used for a touchscreen device.
   virtual bool HasTouchscreen() const;
 
+  // Returns true if the converter is used for a pen device.
+  virtual bool HasPen() const;
+
   // Returns true if the converter is used for a device with a caps lock LED.
   virtual bool HasCapsLockLed() const;
 
   // Returns the size of the touchscreen device if the converter is used for a
   // touchscreen device.
   virtual gfx::Size GetTouchscreenSize() const;
 
   // Returns the number of touch points this device supports. Should not be
   // called unless HasTouchscreen() returns true
   virtual int GetTouchPoints() const;
 
   // Sets which keyboard keys should be processed. If |enable_filter| is
   // false, all keys are allowed and |allowed_keys| is ignored.
   virtual void SetKeyFilter(bool enable_filter,
                             std::vector<DomCode> allowed_keys);
 
   // Update caps lock LED state.
   virtual void SetCapsLockLed(bool enabled);
 
   // Update touch event logging state.
   virtual void SetTouchEventLoggingEnabled(bool enabled);
 
+  // Sets callback to enable/disable palm suppression.
+  virtual void SetPalmSuppressionCallback(
+      const base::Callback<void(bool)>& callback);
+
   // Helper to generate a base::TimeTicks from an input_event's time
   static base::TimeTicks TimeTicksFromInputEvent(const input_event& event);
 
  protected:
   // base::MessagePumpLibevent::Watcher:
   void OnFileCanWriteWithoutBlocking(int fd) override;
 
   // File descriptor to read.
   int fd_;
 
@@ skipping 13 matching lines @@
   // Controller for watching the input fd.
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_