Make the cursor have separate mode for disabled mouse events and invisible.

ui/views/widget/desktop_aura/desktop_cursor_client.cc

 // Copyright (c) 2012 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/views/widget/desktop_aura/desktop_cursor_client.h"
 
 #include "ui/aura/root_window.h"
 #include "ui/base/cursor/cursor_loader.h"
 
 namespace views {
 
 DesktopCursorClient::DesktopCursorClient(aura::RootWindow* window)
     : root_window_(window),
       cursor_loader_(ui::CursorLoader::Create()),
       current_cursor_(ui::kCursorNone),
       cursor_visible_(true) {
 }
 
 DesktopCursorClient::~DesktopCursorClient() {
 }
 
 void DesktopCursorClient::SetCursor(gfx::NativeCursor cursor) {
   current_cursor_ = cursor;
   cursor_loader_->SetPlatformCursor(&current_cursor_);
   if (cursor_visible_)
     root_window_->SetCursor(current_cursor_);
 }
 
-void DesktopCursorClient::ShowCursor(bool show) {
-  if (cursor_visible_ == show)
-    return;
-  cursor_visible_ = show;
-  if (cursor_visible_)
-    root_window_->SetCursor(current_cursor_);
-  else
-    root_window_->SetCursor(ui::kCursorNone);
-  root_window_->OnCursorVisibilityChanged(cursor_visible_);
+void DesktopCursorClient::ShowCursor() {
+  SetCursorVisibility(true);
+}
+
+void DesktopCursorClient::HideCursor() {
+  SetCursorVisibility(false);
 }
 
 bool DesktopCursorClient::IsCursorVisible() const {
   return cursor_visible_;
 }
 
+void DesktopCursorClient::EnableMouseEvents() {
+  // TODO(mazda): Implement this.
+  NOTIMPLEMENTED();
+}
+
+void DesktopCursorClient::DisableMouseEvents() {
+  // TODO(mazda): Implement this.
+  NOTIMPLEMENTED();
+}
+
+bool DesktopCursorClient::IsMouseEventsEnabled() const {
+  // TODO(mazda): Implement this.
+  NOTIMPLEMENTED();
+  return true;
+}
+
 void DesktopCursorClient::SetDeviceScaleFactor(float device_scale_factor) {
   cursor_loader_->UnloadAll();
   cursor_loader_->set_device_scale_factor(device_scale_factor);
 }
 
 void DesktopCursorClient::LockCursor() {
   // TODO(mazda): Implement this.
   NOTIMPLEMENTED();
 }
 
 void DesktopCursorClient::UnlockCursor() {
   // TODO(mazda): Implement this.
   NOTIMPLEMENTED();
 }
 
+void DesktopCursorClient::SetCursorVisibility(bool visible) {
+  if (cursor_visible_ == visible)
+    return;
+  cursor_visible_ = visible;
+  root_window_->SetCursor(current_cursor_);
+  root_window_->OnCursorVisibilityChanged(visible);
+}
+
 }  // namespace views