MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/views/test/widget_event_generator.h

+// Copyright 2014 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_WIDGET_EVENT_GENERATOR_H_
+#define UI_VIEWS_TEST_WIDGET_EVENT_GENERATOR_H_
+
+#include "base/macros.h"
+#include "build/build_config.h"
+#include "ui/gfx/native_widget_types.h"
+
+#if defined(USE_AURA)
+#include "ui/aura/test/event_generator.h"
+#elif defined(OS_MACOSX)
+#include "ui/views/test/widget_event_generator_mac.h"
+#endif
+
+namespace views {
+class Widget;
+
+namespace test {
+
+#if defined(USE_AURA)
+typedef aura::test::EventGenerator PlatformEventGenerator;
+#elif defined(OS_MACOSX)
+typedef WidgetEventGeneratorMac PlatformEventGenerator;
+#endif
+
+// A cross-platform event generator that can dispatch events to a views::Widget
+// and will work correctly in a sharded non-interactive unit test. On Aura
+// builds, it is simply an aura::test::EventGenerator. On other platforms,
+// events are generated and dispatched to the native widget.
+class WidgetEventGenerator : public PlatformEventGenerator {
+ public:
+  explicit WidgetEventGenerator(Widget* widget);
+  explicit WidgetEventGenerator(gfx::NativeView context);
+  WidgetEventGenerator(gfx::NativeView context,
+                       Widget* window_for_initial_location);
+
+  virtual ~WidgetEventGenerator();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WidgetEventGenerator);
+};
+
+}  // namespace test
+}  // namespace views
+
+#endif  // UI_VIEWS_TEST_WIDGET_EVENT_GENERATOR_H_