Update from https://crrev.com/320931

cc/base/latency_info_swap_promise.cc

Index: cc/base/latency_info_swap_promise.cc
diff --git a/cc/base/latency_info_swap_promise.cc b/cc/base/latency_info_swap_promise.cc
deleted file mode 100644
index 8c6ee0ec1313a157e1094c2b90b4acaf045729bb..0000000000000000000000000000000000000000
--- a/cc/base/latency_info_swap_promise.cc
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2013 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/base/latency_info_swap_promise.h"
-
-#include "base/logging.h"
-
-namespace {
-  ui::LatencyComponentType DidNotSwapReasonToLatencyComponentType(
-      cc::SwapPromise::DidNotSwapReason reason) {
-    switch (reason) {
-      case cc::SwapPromise::DID_NOT_SWAP_UNKNOWN:
-      case cc::SwapPromise::SWAP_FAILS:
-        return ui::INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT;
-      case cc::SwapPromise::COMMIT_FAILS:
-        return ui::INPUT_EVENT_LATENCY_TERMINATED_COMMIT_FAILED_COMPONENT;
-      case cc::SwapPromise::COMMIT_NO_UPDATE:
-        return ui::INPUT_EVENT_LATENCY_TERMINATED_COMMIT_NO_UPDATE_COMPONENT;
-    }
-    NOTREACHED() << "Unhandled DidNotSwapReason.";
-    return ui::INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT;
-  }
-}  // namespace
-
-namespace cc {
-
-LatencyInfoSwapPromise::LatencyInfoSwapPromise(const ui::LatencyInfo& latency)
-    : latency_(latency) {
-}
-
-LatencyInfoSwapPromise::~LatencyInfoSwapPromise() {
-}
-
-void LatencyInfoSwapPromise::DidSwap(CompositorFrameMetadata* metadata) {
-  DCHECK(!latency_.terminated);
-  metadata->latency_info.push_back(latency_);
-}
-
-void LatencyInfoSwapPromise::DidNotSwap(DidNotSwapReason reason) {
-  latency_.AddLatencyNumber(DidNotSwapReasonToLatencyComponentType(reason),
-                            0, 0);
-  // TODO(miletus): Turn this back on once per-event LatencyInfo tracking
-  // is enabled in GPU side.
-  // DCHECK(latency_.terminated);
-}
-
-int64 LatencyInfoSwapPromise::TraceId() const {
-  return latency_.trace_id;
-}
-
-}  // namespace cc