Prevent mouse down events on the toolbar view from moving the parent window

chrome/browser/cocoa/toolbar_view_unittest.mm

 // Copyright (c) 2009 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.
 
-// This file is intentionally empty; there is no code in ToolbarView to test.
+#include "base/scoped_nsobject.h"
+#import "chrome/browser/cocoa/cocoa_test_helper.h"
+#import "chrome/browser/cocoa/toolbar_view.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class ToolbarViewTest : public testing::Test {
+ public:
+  CocoaTestHelper cocoa_helper_;
+  scoped_nsobject<ToolbarView> view_;
+};
+
+// This class only needs to do one thing: prevent mouse down events from moving
+// the parent window around.
+TEST_F(ToolbarViewTest, CanDragWindow) {
+  view_.reset([[ToolbarView alloc] init]);
+  EXPECT_FALSE([view_.get() mouseDownCanMoveWindow]);
+}
+
+}  // namespace