Don't send touch events to windows like menus when the touch occurs outside the menu bounds.

ui/views/controls/menu/menu_controller.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/controls/menu/menu_controller.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/rtl.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/window_tree_host.h"
 #include "ui/base/dragdrop/drag_utils.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/screen.h"
 #include "ui/native_theme/native_theme.h"
@@ skipping 1185 matching lines @@
   DCHECK(!showing_);
   if (owner_)
     owner_->RemoveObserver(this);
   if (active_instance_ == this)
     active_instance_ = NULL;
   StopShowTimer();
   StopCancelAllTimer();
 }
 
 void MenuController::RunMessageLoop(bool nested_menu) {
+#if defined(OS_WIN)
+  // Menus should be dismissed if we touch outside their bounds.
+  if (owner_ && owner_->GetNativeView()) {
+    owner_->GetNativeView()->SetProperty(
+        aura::client::kReleaseCaptureOnTouchOutside, true);
+  }
+#endif
   message_loop_->Run(this, owner_, nested_menu);
 }
 
 bool MenuController::SendAcceleratorToHotTrackedView() {
   CustomButton* hot_view = GetFirstHotTrackedView(pending_state_.item);
   if (!hot_view)
     return false;
 
   ui::Accelerator accelerator(ui::VKEY_RETURN, ui::EF_NONE);
   hot_view->AcceleratorPressed(accelerator);
@@ skipping 1193 matching lines @@
 MenuItemView* MenuController::ExitMenuRun() {
   // Release the lock which prevents Chrome from shutting down while the menu is
   // showing.
   if (async_run_ && ViewsDelegate::GetInstance())
     ViewsDelegate::GetInstance()->ReleaseRef();
 
   // Close any open menus.
   SetSelection(nullptr, SELECTION_UPDATE_IMMEDIATELY | SELECTION_EXIT);
 
 #if defined(OS_WIN)
+  if (owner_ && owner_->GetNativeView()) {
+    owner_->GetNativeView()->ClearProperty(
+        aura::client::kReleaseCaptureOnTouchOutside);
+  }
   // On Windows, if we select the menu item by touch and if the window at the
   // location is another window on the same thread, that window gets a
   // WM_MOUSEACTIVATE message and ends up activating itself, which is not
   // correct. We workaround this by setting a property on the window at the
   // current cursor location. We check for this property in our
   // WM_MOUSEACTIVATE handler and don't activate the window if the property is
   // set.
   if (item_selected_by_touch_) {
     item_selected_by_touch_ = false;
     POINT cursor_pos;
@@ skipping 90 matching lines @@
   }
 }
 
 gfx::Screen* MenuController::GetScreen() {
   Widget* root = owner_ ? owner_->GetTopLevelWidget() : NULL;
   return root ? gfx::Screen::GetScreenFor(root->GetNativeView())
               : gfx::Screen::GetNativeScreen();
 }
 
 }  // namespace views