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

services/navigation/view_impl.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/navigation/view_impl.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/interstitial_page.h"
 #include "content/public/browser/interstitial_page_delegate.h"
@@ skipping 262 matching lines @@
       views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.delegate = this;
   params.native_widget = new views::NativeWidgetMus(
       widget_.get(), root, ui::mojom::SurfaceType::DEFAULT);
   widget_->Init(params);
   widget_->Show();
 }
 
 void ViewImpl::OnDidDestroyClient(ui::WindowTreeClient* client) {}
-void ViewImpl::OnEventObserved(const ui::Event& event, ui::Window* target) {}
+void ViewImpl::OnPointerEventObserved(const ui::PointerEvent& event,
+                                      ui::Window* target) {}
 
 views::View* ViewImpl::GetContentsView() {
   return web_view_;
 }
 
 views::Widget* ViewImpl::GetWidget() {
   return web_view_->GetWidget();
 }
 
 const views::Widget* ViewImpl::GetWidget() const {
   return web_view_->GetWidget();
 }
 
 }  // navigation