Introducing SurfaceReferenceFactory

cc/surfaces/direct_surface_reference_factory.cc

+// 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.
+
+#include "cc/surfaces/direct_surface_reference_factory.h"
+
+#include <vector>
+
+#include "cc/surfaces/surface.h"
+
+namespace cc {
+
+DirectSurfaceReferenceFactory::DirectSurfaceReferenceFactory(
+    SurfaceManager* manager)
+    : manager_(manager) {}
+
+void DirectSurfaceReferenceFactory::SatisfySequence(
+    const SurfaceSequence& sequence) const {
+  std::vector<uint32_t> sequences;
+  sequences.push_back(sequence.sequence);
+  manager_->DidSatisfySequences(sequence.frame_sink_id, &sequences);
+}
+
+void DirectSurfaceReferenceFactory::RequireSequence(
+    const SurfaceId& surface_id,
+    const SurfaceSequence& sequence) const {
+  auto surface = manager_->GetSurfaceForId(surface_id);

[kylechar, 2016/12/15 19:08:45]

This is a Surface* right? The convention is to use auto* to make it clear it's a
pointer in that case.

[Saman Sami, 2016/12/15 20:41:37]

Done.

+  if (!surface) {
+    LOG(ERROR) << "Attempting to require callback on nonexistent surface";
+    return;
+  }
+  surface->AddDestructionDependency(sequence);
+}
+
+}  // namespace cc