cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

cc/scheduler/vsync_time_source.cc

Index: cc/scheduler/vsync_time_source.cc
diff --git a/cc/scheduler/vsync_time_source.cc b/cc/scheduler/vsync_time_source.cc
deleted file mode 100644
index 206e2376675156e36cd20ee0d284a7dc40b5f7ab..0000000000000000000000000000000000000000
--- a/cc/scheduler/vsync_time_source.cc
+++ /dev/null
@@ -1,76 +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/scheduler/vsync_time_source.h"
-
-#include "base/logging.h"
-
-namespace cc {
-
-scoped_refptr<VSyncTimeSource> VSyncTimeSource::Create(
-    VSyncProvider* vsync_provider, NotificationDisableOption option) {
-  return make_scoped_refptr(new VSyncTimeSource(vsync_provider, option));
-}
-
-VSyncTimeSource::VSyncTimeSource(
-    VSyncProvider* vsync_provider, NotificationDisableOption option)
-    : active_(false),
-      notification_requested_(false),
-      vsync_provider_(vsync_provider),
-      client_(NULL),
-      disable_option_(option) {}
-
-VSyncTimeSource::~VSyncTimeSource() {}
-
-void VSyncTimeSource::SetClient(TimeSourceClient* client) {
-  client_ = client;
-}
-
-void VSyncTimeSource::SetActive(bool active) {
-  if (active_ == active)
-    return;
-  active_ = active;
-  if (active_ && !notification_requested_) {
-    notification_requested_ = true;
-    vsync_provider_->RequestVSyncNotification(this);
-  }
-  if (!active_ && disable_option_ == DISABLE_SYNCHRONOUSLY) {
-    notification_requested_ = false;
-    vsync_provider_->RequestVSyncNotification(NULL);
-  }
-}
-
-bool VSyncTimeSource::Active() const {
-  return active_;
-}
-
-base::TimeTicks VSyncTimeSource::LastTickTime() {
-  return last_tick_time_;
-}
-
-base::TimeTicks VSyncTimeSource::NextTickTime() {
-  return Active() ? last_tick_time_ + interval_ : base::TimeTicks();
-}
-
-void VSyncTimeSource::SetTimebaseAndInterval(base::TimeTicks,
-                                             base::TimeDelta interval) {
-  interval_ = interval;
-}
-
-void VSyncTimeSource::DidVSync(base::TimeTicks frame_time) {
-  last_tick_time_ = frame_time;
-  if (disable_option_ == DISABLE_SYNCHRONOUSLY) {
-    DCHECK(active_);
-  } else if (!active_) {
-    if (notification_requested_) {
-      notification_requested_ = false;
-      vsync_provider_->RequestVSyncNotification(NULL);
-    }
-    return;
-  }
-  if (client_)
-    client_->OnTimerTick();
-}
-
-}  // namespace cc