Implement cc::Selection<gfx::SelectionBound> StructTraits

cc/ipc/struct_traits_unittest.cc

Index: cc/ipc/struct_traits_unittest.cc
diff --git a/cc/ipc/struct_traits_unittest.cc b/cc/ipc/struct_traits_unittest.cc
index 0182f694135327c959c2367bcd2ffa426d2de4e0..02f1496a34fa4c1be88a32331a43cab2a30c5c0c 100644
--- a/cc/ipc/struct_traits_unittest.cc
+++ b/cc/ipc/struct_traits_unittest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/message_loop/message_loop.h"
+#include "cc/input/selection.h"
 #include "cc/ipc/traits_test_service.mojom.h"
 #include "cc/quads/render_pass_id.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
@@ -39,6 +40,11 @@ class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
     callback.Run(r);
   }
 
+  void EchoSelection(const Selection<gfx::SelectionBound>& s,
+                     const EchoSelectionCallback& callback) override {
+    callback.Run(s);
+  }
+
   void EchoSharedQuadState(
       const SharedQuadState& s,
       const EchoSharedQuadStateCallback& callback) override {
@@ -121,6 +127,31 @@ TEST_F(StructTraitsTest, ReturnedResource) {
   EXPECT_EQ(lost, output.lost);
 }
 
+TEST_F(StructTraitsTest, Selection) {
+  gfx::SelectionBound start;
+  start.SetEdge(gfx::PointF(1234.5f, 67891.f), gfx::PointF(5432.1f, 1987.6f));
+  start.set_visible(true);
+  start.set_type(gfx::SelectionBound::CENTER);
+  gfx::SelectionBound end;
+  end.SetEdge(gfx::PointF(1337.5f, 52124.f), gfx::PointF(1234.3f, 8765.6f));
+  end.set_visible(false);
+  end.set_type(gfx::SelectionBound::RIGHT);
+  const bool is_editable = true;
+  const bool is_empty_text_form_control = true;
+  Selection<gfx::SelectionBound> input;
+  input.start = start;
+  input.end = end;
+  input.is_editable = is_editable;
+  input.is_empty_text_form_control = is_empty_text_form_control;
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  Selection<gfx::SelectionBound> output;
+  proxy->EchoSelection(input, &output);
+  EXPECT_EQ(start, output.start);
+  EXPECT_EQ(end, output.end);
+  EXPECT_EQ(is_editable, output.is_editable);
+  EXPECT_EQ(is_empty_text_form_control, output.is_empty_text_form_control);
+}
+
 TEST_F(StructTraitsTest, SurfaceId) {
   const uint32_t id_namespace = 1337;
   const uint32_t local_id = 0xfbadbeef;