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

cc/ipc/selection_struct_traits.h

Index: cc/ipc/selection_struct_traits.h
diff --git a/cc/ipc/selection_struct_traits.h b/cc/ipc/selection_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..d4b29ea363723c11460ea0a724076629224f0683
--- /dev/null
+++ b/cc/ipc/selection_struct_traits.h
@@ -0,0 +1,47 @@
+// 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 CC_IPC_SELECTION_STRUCT_TRAITS_H_
+#define CC_IPC_SELECTION_STRUCT_TRAITS_H_
+
+#include "cc/input/selection.h"
+#include "cc/ipc/selection.mojom.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<cc::mojom::Selection, cc::Selection<gfx::SelectionBound>> {
+  static gfx::SelectionBound start(
+      const cc::Selection<gfx::SelectionBound>& selection) {
+    return selection.start;
+  }
+
+  static gfx::SelectionBound end(
+      const cc::Selection<gfx::SelectionBound>& selection) {
+    return selection.end;
+  }
+
+  static bool is_editable(const cc::Selection<gfx::SelectionBound>& selection) {
+    return selection.is_editable;
+  }
+
+  static bool is_empty_text_form_control(
+      const cc::Selection<gfx::SelectionBound>& selection) {
+    return selection.is_empty_text_form_control;
+  }
+
+  static bool Read(cc::mojom::SelectionDataView data,
+                   cc::Selection<gfx::SelectionBound>* out) {
+    if (!data.ReadStart(&out->start) || !data.ReadEnd(&out->end))
+      return false;
+
+    out->is_editable = data.is_editable();
+    out->is_empty_text_form_control = data.is_empty_text_form_control();
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // CC_IPC_SELECTION_STRUCT_TRAITS_H_