Add StructTraits for AcceleratedWidget instances.

ui/gfx/mojo/struct_traits_unittest.cc

 // 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.
 
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/mojo/traits_test_service.mojom.h"
+#include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/selection_bound.h"
 #include "ui/gfx/transform.h"
 
 namespace gfx {
 
 namespace {
 
+gfx::AcceleratedWidget castToAcceleratedWidget(int i) {
+#if defined(USE_OZONE) || defined(USE_X11)
+  return static_cast<gfx::AcceleratedWidget>(i);
+#else
+  return reinterpret_cast<gfx::AcceleratedWidget>(i);
+#endif
+}
+
 class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
  public:
   StructTraitsTest() {}
 
  protected:
   mojom::TraitsTestServicePtr GetTraitsTestProxy() {
     return traits_test_bindings_.CreateInterfacePtrAndBind(this);
   }
 
  private:
   // TraitsTestService:
   void EchoSelectionBound(const SelectionBound& s,
                           const EchoSelectionBoundCallback& callback) override {
     callback.Run(s);
   }
 
   void EchoTransform(const Transform& t,
                      const EchoTransformCallback& callback) override {
     callback.Run(t);
   }
 
+  void EchoAcceleratedWidget(
+      const AcceleratedWidget& t,
+      const EchoAcceleratedWidgetCallback& callback) override {
+    callback.Run(t);
+  }
+
   base::MessageLoop loop_;
   mojo::BindingSet<TraitsTestService> traits_test_bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(StructTraitsTest);
 };
 
 }  // namespace
 
 TEST_F(StructTraitsTest, SelectionBound) {
   const gfx::SelectionBound::Type type = gfx::SelectionBound::CENTER;
@@ skipping 50 matching lines @@
   EXPECT_EQ(col1row3, output.matrix().get(2, 0));
   EXPECT_EQ(col2row3, output.matrix().get(2, 1));
   EXPECT_EQ(col3row3, output.matrix().get(2, 2));
   EXPECT_EQ(col4row3, output.matrix().get(2, 3));
   EXPECT_EQ(col1row4, output.matrix().get(3, 0));
   EXPECT_EQ(col2row4, output.matrix().get(3, 1));
   EXPECT_EQ(col3row4, output.matrix().get(3, 2));
   EXPECT_EQ(col4row4, output.matrix().get(3, 3));
 }
 
+// AcceleratedWidgets can only be sent between processes on X11, Ozone, Win
+#if defined(OS_WIN) || defined(USE_OZONE) || defined(USE_X11)
+#define MAYBE_AcceleratedWidget AcceleratedWidget
+#else
+#define MAYBE_AcceleratedWidget DISABLED_AcceleratedWidget
+#endif
+
+TEST_F(StructTraitsTest, MAYBE_AcceleratedWidget) {
+  gfx::AcceleratedWidget input(castToAcceleratedWidget(1001));
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  gfx::AcceleratedWidget output;
+  proxy->EchoAcceleratedWidget(input, &output);
+  EXPECT_EQ(input, output);
+}
+
 }  // namespace gfx