Route selection bounds updates through the compositor

cc/output/viewport_selection_bound.cc

Index: cc/output/viewport_selection_bound.cc
diff --git a/cc/output/viewport_selection_bound.cc b/cc/output/viewport_selection_bound.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cfcb82999e644bfc39ebc5051d08ab55003fb937
--- /dev/null
+++ b/cc/output/viewport_selection_bound.cc
@@ -0,0 +1,27 @@
+// 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.
+
+#include "cc/output/viewport_selection_bound.h"
+
+namespace cc {
+
+ViewportSelectionBound::ViewportSelectionBound()
+    : type(SELECTION_BOUND_EMPTY), visible(false) {
+}
+
+ViewportSelectionBound::~ViewportSelectionBound() {
+}
+
+bool operator==(const ViewportSelectionBound& lhs,
+                const ViewportSelectionBound& rhs) {
+  return lhs.type == rhs.type && lhs.visible == rhs.visible &&
+         lhs.viewport_rect == rhs.viewport_rect;
+}
+
+bool operator!=(const ViewportSelectionBound& lhs,
+                const ViewportSelectionBound& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace cc