Ensure on Windows AURA that the cursor stays within the bounds of the window during a LockMouse ope…

ui/views/widget/desktop_aura/desktop_root_window_host_win.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_root_window_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 449 matching lines @@
     return false;
   }
   POINT pt = {0};
   ::GetCursorPos(&pt);
   *location_return =
       gfx::Point(static_cast<int>(pt.x), static_cast<int>(pt.y));
   return true;
 }
 
 bool DesktopRootWindowHostWin::ConfineCursorToRootWindow() {
-  return false;
+  RECT window_rect = root_window_->GetBoundsInScreen().ToRECT();
+  ::ClipCursor(&window_rect);
+  return true;
 }
 
 void DesktopRootWindowHostWin::UnConfineCursor() {
+  ::ClipCursor(NULL);
 }
 
 void DesktopRootWindowHostWin::OnCursorVisibilityChanged(bool show) {
+  ::ShowCursor(!!show);
 }
 
 void DesktopRootWindowHostWin::MoveCursorTo(const gfx::Point& location) {
   POINT cursor_location = location.ToPOINT();
   ::ClientToScreen(GetHWND(), &cursor_location);
   ::SetCursorPos(cursor_location.x, cursor_location.y);
 }
 
 void DesktopRootWindowHostWin::SetFocusWhenShown(bool focus_when_shown) {
 }
@@ skipping 382 matching lines @@
 
 // static
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopRootWindowHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views