chromeos: moves setting of touch state to a separate class

ui/display/manager/chromeos/default_touch_transform_setter.cc

Index: ui/display/manager/chromeos/default_touch_transform_setter.cc
diff --git a/ui/display/manager/chromeos/default_touch_transform_setter.cc b/ui/display/manager/chromeos/default_touch_transform_setter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cd94a89c24a49958ff6ee61cd6ea223bbd85950e
--- /dev/null
+++ b/ui/display/manager/chromeos/default_touch_transform_setter.cc
@@ -0,0 +1,31 @@
+// 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/display/manager/chromeos/default_touch_transform_setter.h"
+
+#include "ui/display/manager/chromeos/touch_device_transform.h"
+#include "ui/events/devices/device_data_manager.h"
+
+namespace display {
+
+DefaultTouchTransformSetter::DefaultTouchTransformSetter() = default;
+
+DefaultTouchTransformSetter::~DefaultTouchTransformSetter() = default;
+
+void DefaultTouchTransformSetter::ConfigureTouchDevices(
+    const std::map<int32_t, double>& scales,
+    const std::vector<TouchDeviceTransform>& transforms) {
+  ui::DeviceDataManager* device_manager = ui::DeviceDataManager::GetInstance();
+  device_manager->ClearTouchDeviceAssociations();
+  for (auto& device_scale_pair : scales) {
+    device_manager->UpdateTouchRadiusScale(device_scale_pair.first,
+                                           device_scale_pair.second);
+  }
+  for (const TouchDeviceTransform& transform : transforms) {
+    device_manager->UpdateTouchInfoForDisplay(
+        transform.display_id, transform.device_id, transform.transform);
+  }
+}
+
+}  // namespace display