mus: Change PointerWatcher to observe all pointer events, with moves optional.

services/ui/demo/mus_demo.cc

 // Copyright 2016 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 "services/ui/demo/mus_demo.h"
 
 #include "base/time/time.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/ui/common/gpu_service.h"
 #include "services/ui/public/cpp/bitmap_uploader.h"
@@ skipping 67 matching lines @@
 void MusDemo::OnEmbed(Window* window) {
   // Not called for the WindowManager.
   NOTREACHED();
 }
 
 void MusDemo::OnDidDestroyClient(WindowTreeClient* client) {
   window_tree_client_ = nullptr;
   timer_.Stop();
 }
 
-void MusDemo::OnEventObserved(const Event& event, Window* target) {}
+void MusDemo::OnPointerEventObserved(const PointerEvent& event,
+                                     Window* target) {}
 
 void MusDemo::SetWindowManagerClient(WindowManagerClient* client) {}
 
 bool MusDemo::OnWmSetBounds(Window* window, gfx::Rect* bounds) {
   return true;
 }
 
 bool MusDemo::OnWmSetProperty(Window* window,
                               const std::string& name,
                               std::unique_ptr<std::vector<uint8_t>>* new_data) {
@@ skipping 75 matching lines @@
       new std::vector<unsigned char>(addr, addr + bytes));
   bitmap_.unlockPixels();
 
   // Send frame to MUS via BitmapUploader.
   uploader_->SetBitmap(bounds.width(), bounds.height(), std::move(data),
                        ui::BitmapUploader::BGRA);
 }
 
 }  // namespace demo
 }  // namespace ui