Changes views_aura_mus_unittests to create DesktopNativeWidgetAura

ui/views/test/test_platform_native_widget.h

+// Copyright 2016 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.
+
+#ifndef UI_VIEWS_TEST_TEST_PLATFORM_NATIVE_WIDGET_H_
+#define UI_VIEWS_TEST_TEST_PLATFORM_NATIVE_WIDGET_H_
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "ui/views/view.h"
+
+namespace views {
+namespace internal {
+class NativeWidgetDelegate;
+}
+namespace test {
+
+// NativeWidget implementation that adds the following:
+// . capture can be mocked.
+// . a boolean is set when the NativeWiget is destroyed.

[msw, 2016/11/11 00:29:24]

nit: NativeWidget

[sky, 2016/11/11 01:09:13]

Done.

+// Don't create directly, instead go through functions in
+// native_widget_factory.h that create the appropriate platform specific
+// implementation.
+template <typename PlatformNativeWidget>
+class TestPlatformNativeWidget : public PlatformNativeWidget {
+ public:
+  TestPlatformNativeWidget(internal::NativeWidgetDelegate* delegate,
+                           bool mock_capture,
+                           bool* destroyed)
+      : PlatformNativeWidget(delegate),
+        mouse_capture_(false),
+        mock_capture_(mock_capture),
+        destroyed_(destroyed) {}
+
+  ~TestPlatformNativeWidget() override {
+    if (destroyed_)
+      *destroyed_ = true;
+  }
+
+  // PlatformNativeWidget:
+  void SetCapture() override {
+    if (mock_capture_)
+      mouse_capture_ = true;
+    else
+      PlatformNativeWidget::SetCapture();
+  }
+
+  void ReleaseCapture() override {
+    if (mock_capture_) {
+      if (mouse_capture_)
+        this->delegate()->OnMouseCaptureLost();
+      mouse_capture_ = false;
+    } else {
+      PlatformNativeWidget::ReleaseCapture();
+    }
+  }
+
+  bool HasCapture() const override {
+    return mock_capture_ ? mouse_capture_ : PlatformNativeWidget::HasCapture();
+  }
+
+ private:
+  bool mouse_capture_;
+  const bool mock_capture_;
+  bool* destroyed_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestPlatformNativeWidget);
+};
+
+}  // namespace test
+}  // namespace views
+
+#endif  // UI_VIEWS_TEST_TEST_PLATFORM_NATIVE_WIDGET_H_