Restructure the events target into two components:

ui/events/events_stub.cc

+// Copyright (c) 2013 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 "base/logging.h"
+#include "base/time/time.h"
+#include "ui/events/event_utils.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/vector2d.h"
+
+namespace ui {
+
+// Stub implementations of platform-specific methods in events_util.h, built
+// on platform sthat currently do not have a complete implementation of events.
+
+void UpdateDeviceList() {
+  NOTIMPLEMENTED();
+}
+
+EventType EventTypeFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return ET_UNKNOWN;
+}
+
+int EventFlagsFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+base::TimeDelta EventTimeFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return base::TimeDelta();
+}
+
+gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return gfx::Point();
+}
+
+gfx::Point EventSystemLocationFromNative(
+    const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return gfx::Point();
+}
+
+int EventButtonFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+bool IsMouseEvent(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+int GetChangedMouseButtonFlagsFromNative(
+    const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return gfx::Vector2d();
+}
+
+void ClearTouchIdIfReleased(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+}
+
+int GetTouchId(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+float GetTouchRadiusX(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.f;
+}
+
+float GetTouchRadiusY(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.f;
+}
+
+float GetTouchAngle(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.f;
+}
+
+float GetTouchForce(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.f;
+}
+
+bool GetScrollOffsets(const base::NativeEvent& native_event,
+                      float* x_offset,
+                      float* y_offset,
+                      float* x_offset_ordinal,
+                      float* y_offset_ordinal,
+                      int* finger_count) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool GetFlingData(const base::NativeEvent& native_event,
+                  float* vx,
+                  float* vy,
+                  float* vx_ordinal,
+                  float* vy_ordinal,
+                  bool* is_cancel) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool GetGestureTimes(const base::NativeEvent& native_event,
+                     double* start_time,
+                     double* end_time) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+void SetNaturalScroll(bool enabled) {
+  NOTIMPLEMENTED();
+}
+
+bool IsNaturalScrollEnabled() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool IsTouchpadEvent(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool IsNoopEvent(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+base::NativeEvent CreateNoopEvent() {
+  return base::NativeEvent();
+}
+
+KeyboardCode KeyboardCodeFromNative(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return static_cast<KeyboardCode>(0);
+}
+
+}  // namespace ui