Revert "Delete CC."

cc/output/begin_frame_args.cc

+// 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/output/begin_frame_args.h"
+
+#include "base/trace_event/trace_event_argument.h"
+#include "ui/gfx/frame_time.h"
+
+namespace cc {
+
+const char* BeginFrameArgs::TypeToString(BeginFrameArgsType type) {
+  switch (type) {
+    case BeginFrameArgs::INVALID:
+      return "INVALID";
+    case BeginFrameArgs::NORMAL:
+      return "NORMAL";
+    case BeginFrameArgs::SYNCHRONOUS:
+      return "SYNCHRONOUS";
+    case BeginFrameArgs::MISSED:
+      return "MISSED";
+    case BeginFrameArgs::BEGIN_FRAME_ARGS_TYPE_MAX:
+      return "BEGIN_FRAME_ARGS_TYPE_MAX";
+  }
+  NOTREACHED();
+  return "???";
+}
+
+BeginFrameArgs::BeginFrameArgs()
+    : frame_time(base::TimeTicks()),
+      deadline(base::TimeTicks()),
+      interval(base::TimeDelta::FromMicroseconds(-1)),
+      type(BeginFrameArgs::INVALID) {
+}
+
+BeginFrameArgs::BeginFrameArgs(base::TimeTicks frame_time,
+                               base::TimeTicks deadline,
+                               base::TimeDelta interval,
+                               BeginFrameArgs::BeginFrameArgsType type)
+    : frame_time(frame_time),
+      deadline(deadline),
+      interval(interval),
+      type(type) {
+}
+
+BeginFrameArgs BeginFrameArgs::Create(BeginFrameArgs::CreationLocation location,
+                                      base::TimeTicks frame_time,
+                                      base::TimeTicks deadline,
+                                      base::TimeDelta interval,
+                                      BeginFrameArgs::BeginFrameArgsType type) {
+  DCHECK_NE(type, BeginFrameArgs::INVALID);
+  DCHECK_NE(type, BeginFrameArgs::BEGIN_FRAME_ARGS_TYPE_MAX);
+#ifdef NDEBUG
+  return BeginFrameArgs(frame_time, deadline, interval, type);
+#else
+  BeginFrameArgs args = BeginFrameArgs(frame_time, deadline, interval, type);
+  args.created_from = location;
+  return args;
+#endif
+}
+
+scoped_refptr<base::trace_event::ConvertableToTraceFormat>
+BeginFrameArgs::AsValue() const {
+  scoped_refptr<base::trace_event::TracedValue> state =
+      new base::trace_event::TracedValue();
+  AsValueInto(state.get());
+  return state;
+}
+
+void BeginFrameArgs::AsValueInto(base::trace_event::TracedValue* state) const {
+  state->SetString("type", "BeginFrameArgs");
+  state->SetString("subtype", TypeToString(type));
+  state->SetDouble("frame_time_us", frame_time.ToInternalValue());
+  state->SetDouble("deadline_us", deadline.ToInternalValue());
+  state->SetDouble("interval_us", interval.InMicroseconds());
+#ifndef NDEBUG
+  state->SetString("created_from", created_from.ToString());
+#endif
+}
+
+// This is a hard-coded deadline adjustment that assumes 60Hz, to be used in
+// cases where a good estimated draw time is not known. Using 1/3 of the vsync
+// as the default adjustment gives the Browser the last 1/3 of a frame to
+// produce output, the Renderer Impl thread the middle 1/3 of a frame to produce
+// ouput, and the Renderer Main thread the first 1/3 of a frame to produce
+// output.
+base::TimeDelta BeginFrameArgs::DefaultEstimatedParentDrawTime() {
+  return base::TimeDelta::FromMicroseconds(16666 / 3);
+}
+
+base::TimeDelta BeginFrameArgs::DefaultInterval() {
+  return base::TimeDelta::FromMicroseconds(16666);
+}
+
+}  // namespace cc