Implement cc::BeginFrameArgs StructTraits

cc/ipc/begin_frame_args_struct_traits.h

Index: cc/ipc/begin_frame_args_struct_traits.h
diff --git a/cc/ipc/begin_frame_args_struct_traits.h b/cc/ipc/begin_frame_args_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..530aaf03eb537b902a58ec84946c22158f0310f6
--- /dev/null
+++ b/cc/ipc/begin_frame_args_struct_traits.h
@@ -0,0 +1,51 @@
+// 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_BEGIN_FRAME_ARGS_STRUCT_TRAITS_H_
+#define CC_IPC_BEGIN_FRAME_ARGS_STRUCT_TRAITS_H_
+
+#include "cc/ipc/begin_frame_args.mojom.h"
+#include "cc/output/begin_frame_args.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<cc::mojom::BeginFrameArgs, cc::BeginFrameArgs> {
+  static base::TimeTicks frame_time(const cc::BeginFrameArgs& args) {
+    return args.frame_time;
+  }
+
+  static base::TimeTicks deadline(const cc::BeginFrameArgs& args) {
+    return args.deadline;
+  }
+
+  static base::TimeDelta interval(const cc::BeginFrameArgs& args) {
+    return args.interval;
+  }
+
+  static cc::mojom::BeginFrameArgsType type(const cc::BeginFrameArgs& args) {
+    return static_cast<cc::mojom::BeginFrameArgsType>(args.type);
+  }
+
+  static bool on_critical_path(const cc::BeginFrameArgs& args) {
+    return args.on_critical_path;
+  }
+
+  static bool Read(cc::mojom::BeginFrameArgsDataView data,
+                   cc::BeginFrameArgs* out) {
+    if (!data.ReadFrameTime(&out->frame_time) ||
+        !data.ReadDeadline(&out->deadline) ||
+        !data.ReadInterval(&out->interval)) {
+      return false;
+    }
+    out->type =
+        static_cast<cc::BeginFrameArgs::BeginFrameArgsType>(data.type());
+    out->on_critical_path = data.on_critical_path();
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // CC_IPC_BEGIN_FRAME_ARGS_STRUCT_TRAITS_H_