Skeleton surface interfaces in cc/surfaces

cc/surfaces/surface_manager.cc

Index: cc/surfaces/surface_manager.cc
diff --git a/cc/surfaces/surface_manager.cc b/cc/surfaces/surface_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..366fa81c70e62df6cef0d0121ec90655bf5ce00f
--- /dev/null
+++ b/cc/surfaces/surface_manager.cc
@@ -0,0 +1,37 @@
+// 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_manager.h"
+
+#include "base/logging.h"
+
+namespace cc {
+
+SurfaceManager::SurfaceManager()
+    : next_surface_id_(1) {
+}
+
+SurfaceManager::~SurfaceManager() {}
+
+int SurfaceManager::RegisterAndAllocateIDForSurface(Surface* surface) {
+  DCHECK(surface);
+  int surface_id = next_surface_id_++;
+  surface_map_[surface_id] = surface;
+  return surface_id;
+}
+
+void SurfaceManager::DeregisterSurface(int surface_id) {
+  SurfaceMap::iterator it = surface_map_.find(surface_id);
+  DCHECK(it != surface_map_.end());
+  surface_map_.erase(it);
+}
+
+Surface* SurfaceManager::GetSurfaceForID(int surface_id) {
+  SurfaceMap::iterator it = surface_map_.find(surface_id);
+  if (it == surface_map_.end())
+    return NULL;
+  return it->second;
+}
+
+}  // namespace cc