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

services/ui/test_wm/test_wm.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 <utility>
 
 #include "mojo/public/cpp/bindings/binding.h"
 #include "services/shell/public/c/main.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/shell/public/cpp/service.h"
@@ skipping 23 matching lines @@
 
   // ui::WindowTreeClientDelegate:
   void OnEmbed(ui::Window* root) override {
     // WindowTreeClients configured as the window manager should never get
     // OnEmbed().
     NOTREACHED();
   }
   void OnDidDestroyClient(ui::WindowTreeClient* client) override {
     window_tree_client_ = nullptr;
   }
-  void OnEventObserved(const ui::Event& event, ui::Window* target) override {
+  void OnPointerEventObserved(const ui::PointerEvent& event,
+                              ui::Window* target) override {
     // Don't care.
   }
 
   // ui::WindowManagerDelegate:
   void SetWindowManagerClient(ui::WindowManagerClient* client) override {
     window_manager_client_ = client;
   }
   bool OnWmSetBounds(ui::Window* window, gfx::Rect* bounds) override {
     return true;
   }
@@ skipping 43 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(TestWM);
 };
 
 }  // namespace test
 }  // namespace ui
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   shell::ServiceRunner runner(new ui::test::TestWM);
   return runner.Run(service_request_handle);
 }