Make RenderViewImpl::OnForceRedraw more robust

cc/output/forced_redraw_swap_promise.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/output/forced_redraw_swap_promise.h"
+
+#include "base/logging.h"
+#include "base/trace_event/trace_event.h"
+
+namespace cc {
+
+ForcedRedrawSwapPromise::ForcedRedrawSwapPromise(const ui::LatencyInfo& latency)
+    : latency_(latency) {
+}
+
+ForcedRedrawSwapPromise::~ForcedRedrawSwapPromise() = default;
+
+void ForcedRedrawSwapPromise::DidSwap(CompositorFrameMetadata* metadata) {
+  DCHECK(!latency_.terminated());
+  metadata->latency_info.push_back(latency_);
+}
+
+bool ForcedRedrawSwapPromise::DidNotSwap(DidNotSwapReason reason) {
+  return reason == DidNotSwapReason::SWAP_FAILS;
+}
+
+int64_t ForcedRedrawSwapPromise::TraceId() const {
+  return latency_.trace_id();
+}
+
+}  // namespace cc