Context menu on views must show on mouse down for non-WIN.

ui/views/widget/widget_unittest.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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/events/event_utils.h"
@@ skipping 1697 matching lines @@
   set_views_delegate(delegate);  // ViewsTestBase takes ownership.
   scoped_ptr<Widget> widget(new Widget);
   Widget::InitParams params =
       CreateParams(views::Widget::InitParams::TYPE_POPUP);
   params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   widget->Init(params);
   EXPECT_TRUE(delegate->on_before_init_called());
   EXPECT_TRUE(delegate->is_top_level());
 }
 
+// A scumbag View that deletes its owning widget OnMousePressed.
+class WidgetDeleterView : public View {
+ public:
+  WidgetDeleterView() : View() {}
+
+  // Overridden from View.
+  bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE {
+    delete GetWidget();
+    return true;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WidgetDeleterView);
+};
+
+TEST_F(WidgetTest, TestWidgetDeletedInOnMousePressed) {
+  Widget* widget = new Widget;
+  Widget::InitParams params =
+      CreateParams(views::Widget::InitParams::TYPE_POPUP);
+  params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  widget->Init(params);
+
+  widget->SetContentsView(new WidgetDeleterView);
+
+  widget->SetSize(gfx::Size(100, 100));
+  widget->Show();
+
+  gfx::Point click_location(45, 15);
+  ui::MouseEvent press(ui::ET_MOUSE_PRESSED, click_location, click_location,
+      ui::EF_LEFT_MOUSE_BUTTON);
+  widget->OnMouseEvent(&press);
+
+  // Yay we did not crash!
+}
+
 }  // namespace
 }  // namespace views