Add EventForwarder for routing touch events

ui/android/view_client.cc

Index: ui/android/view_client.cc
diff --git a/ui/android/view_client.cc b/ui/android/view_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0bcb4df2202eac3cda102ecbe1b5cbf5b4fee496
--- /dev/null
+++ b/ui/android/view_client.cc
@@ -0,0 +1,178 @@
+// Copyright 2017 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/android/view_client.h"
+
+namespace ui {
+
+MotionEventData::MotionEventData(float dip_scale,
+                                 jobject jevent,
+                                 long time_ms,
+                                 int android_action,
+                                 int pointer_count,
+                                 int history_size,
+                                 int action_index,
+                                 float pos_x_0,
+                                 float pos_y_0,
+                                 float pos_x_1,
+                                 float pos_y_1,
+                                 int pointer_id_0,
+                                 int pointer_id_1,
+                                 float touch_major_0,
+                                 float touch_major_1,
+                                 float touch_minor_0,
+                                 float touch_minor_1,
+                                 float orientation_0,
+                                 float orientation_1,
+                                 float tilt_0,
+                                 float tilt_1,
+                                 float raw_pos_x,
+                                 float raw_pos_y,
+                                 float pressure,
+                                 int android_tool_type_0,
+                                 int android_tool_type_1,
+                                 int android_action_button,
+                                 int android_button_state,
+                                 int android_meta_state,
+                                 bool is_touch_handle_event)
+    : dip_scale(dip_scale),
+      jevent(jevent),
+      time_ms(time_ms),
+      android_action(android_action),
+      pointer_count(pointer_count),
+      history_size(history_size),
+      action_index(action_index),
+      pos_x_0(pos_x_0),
+      pos_y_0(pos_y_0),
+      pos_x_1(pos_x_1),
+      pos_y_1(pos_y_1),
+      pointer_id_0(pointer_id_0),
+      pointer_id_1(pointer_id_1),
+      touch_major_0(touch_major_0),
+      touch_major_1(touch_major_1),
+      touch_minor_0(touch_minor_0),
+      touch_minor_1(touch_minor_1),
+      orientation_0(orientation_0),
+      orientation_1(orientation_1),
+      tilt_0(tilt_0),
+      tilt_1(tilt_1),
+      raw_pos_x(raw_pos_x),
+      raw_pos_y(raw_pos_y),
+      pressure(pressure),
+      android_tool_type_0(android_tool_type_0),
+      android_tool_type_1(android_tool_type_1),
+      android_action_button(android_action_button),
+      android_button_state(android_button_state),
+      android_meta_state(android_meta_state),
+      is_touch_handle_event(is_touch_handle_event) {}
+
+MotionEventData::MotionEventData(const MotionEventData& other)
+    : dip_scale(other.dip_scale),
+      jevent(other.jevent),
+      time_ms(other.time_ms),
+      android_action(other.android_action),
+      pointer_count(other.pointer_count),
+      history_size(other.history_size),
+      action_index(other.action_index),
+      pos_x_0(other.pos_x_0),
+      pos_y_0(other.pos_y_0),
+      pos_x_1(other.pos_x_1),
+      pos_y_1(other.pos_y_1),
+      pointer_id_0(other.pointer_id_0),
+      pointer_id_1(other.pointer_id_1),
+      touch_major_0(other.touch_major_0),
+      touch_major_1(other.touch_major_1),
+      touch_minor_0(other.touch_minor_0),
+      touch_minor_1(other.touch_minor_1),
+      orientation_0(other.orientation_0),
+      orientation_1(other.orientation_1),
+      tilt_0(other.tilt_0),
+      tilt_1(other.tilt_1),
+      raw_pos_x(other.raw_pos_x),
+      raw_pos_y(other.raw_pos_y),
+      pressure(other.pressure),
+      android_tool_type_0(other.android_tool_type_0),
+      android_tool_type_1(other.android_tool_type_1),
+      android_action_button(other.android_action_button),
+      android_button_state(other.android_button_state),
+      android_meta_state(other.android_meta_state),
+      is_touch_handle_event(other.is_touch_handle_event) {}
+
+MotionEventData MotionEventData::Offset(float delta_x, float delta_y) const {
+  return MotionEventData(
+      dip_scale, jevent, time_ms, android_action, pointer_count, history_size,
+      action_index, pos_x_0 + delta_x, pos_y_0 + delta_y, pos_x_1 + delta_x,
+      pos_y_1 + delta_y, pointer_id_0, pointer_id_1, touch_major_0,
+      touch_major_1, touch_minor_0, touch_minor_1, orientation_0, orientation_1,
+      tilt_0, tilt_1, raw_pos_x, raw_pos_y, pressure, android_tool_type_0,
+      android_tool_type_1, android_action_button, android_button_state,
+      android_meta_state, is_touch_handle_event);
+}
+
+// static
+MotionEventData MotionEventData::ForTouch(float dip_scale,
+                                          jobject jevent,
+                                          long time,
+                                          int action,
+                                          int pointer_count,
+                                          int history_size,
+                                          int action_index,
+                                          float pos_x0,
+                                          float pos_y0,
+                                          float pos_x1,
+                                          float pos_y1,
+                                          int pointer_id_0,
+                                          int pointer_id_1,
+                                          float touch_major_0,
+                                          float touch_major_1,
+                                          float touch_minor_0,
+                                          float touch_minor_1,
+                                          float orientation_0,
+                                          float orientation_1,
+                                          float tilt_0,
+                                          float tilt_1,
+                                          float raw_pos_x,
+                                          float raw_pos_y,
+                                          int tool_type_0,
+                                          int tool_type_1,
+                                          int button_state,
+                                          int meta_state,
+                                          bool is_touch_handle_event) {
+  return MotionEventData(
+      dip_scale, jevent, time, action, pointer_count, history_size,
+      action_index, pos_x0, pos_y0, pos_x1, pos_y1, pointer_id_0, pointer_id_1,
+      touch_major_0, touch_major_1, touch_minor_0, touch_minor_1, orientation_0,
+      orientation_1, tilt_0, tilt_1, raw_pos_x, raw_pos_y, 0.f, tool_type_0,
+      tool_type_1, 0, button_state, meta_state, is_touch_handle_event);
+}
+
+MotionEventData MotionEventData::ForMouse(float dip_scale,
+                                          long time_ms,
+                                          int android_action,
+                                          float pos_x,
+                                          float pos_y,
+                                          int pointer_id,
+                                          float orientation,
+                                          float pressure,
+                                          float tilt,
+                                          int android_tool_type,
+                                          int android_action_button,
+                                          int android_button_state,
+                                          int android_meta_state) {
+  return MotionEventData(dip_scale, nullptr, time_ms, android_action, 0, 0, 0,
+                         pos_x, pos_y, 0.f, 0.f, pointer_id, 0, 0.f, 0.f, 0.f,
+                         0.f, orientation, 0.f, tilt, 0.f, 0.f, 0.f, pressure,
+                         android_tool_type, 0, android_action_button,
+                         android_button_state, android_meta_state, false);
+}
+
+bool ViewClient::OnTouchEvent(const MotionEventData& m) {
+  return false;
+}
+
+bool ViewClient::OnMouseEvent(const MotionEventData& m) {
+  return false;
+}
+
+}  // namespace ui