Revert "Delete CC."

cc/surfaces/surface_id_allocator.cc

Index: cc/surfaces/surface_id_allocator.cc
diff --git a/cc/surfaces/surface_id_allocator.cc b/cc/surfaces/surface_id_allocator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..af9e91bd5c217b2c529c2b98f97ade153c15abae
--- /dev/null
+++ b/cc/surfaces/surface_id_allocator.cc
@@ -0,0 +1,24 @@
+// 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/surfaces/surface_id_allocator.h"
+
+namespace cc {
+
+SurfaceIdAllocator::SurfaceIdAllocator(uint32_t id_namespace)
+    : id_namespace_(id_namespace), next_id_(1u) {
+}
+
+SurfaceId SurfaceIdAllocator::GenerateId() {
+  SurfaceId id(static_cast<uint64_t>(id_namespace_) << 32 | next_id_);
+  next_id_++;
+  return id;
+}
+
+// static
+uint32_t SurfaceIdAllocator::NamespaceForId(SurfaceId id) {
+  return id.id >> 32;
+}
+
+}  // namespace cc