Revert 236254 "Replace old with new synthetic gesture framework."

trunk/src/content/browser/renderer_host/input/synthetic_gesture_controller.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 "content/browser/renderer_host/input/synthetic_gesture_controller.h"
-
-#include "base/debug/trace_event.h"
-#include "content/browser/renderer_host/input/synthetic_gesture_target.h"
-#include "content/common/input/synthetic_smooth_scroll_gesture_params.h"
-#include "content/common/input_messages.h"
-#include "content/public/browser/render_widget_host.h"
-
-namespace content {
-
-SyntheticGestureController::SyntheticGestureController(
-    scoped_ptr<SyntheticGestureTarget> gesture_target)
-    : gesture_target_(gesture_target.Pass()) {}
-
-SyntheticGestureController::~SyntheticGestureController() {}
-
-void SyntheticGestureController::QueueSyntheticGesture(
-    scoped_ptr<SyntheticGesture> synthetic_gesture) {
-  DCHECK(synthetic_gesture);
-
-  pending_gesture_queue_.push_back(synthetic_gesture.release());
-
-  // Start forwarding input events if the queue was previously empty.
-  if (pending_gesture_queue_.size() == 1)
-    StartGesture(*pending_gesture_queue_.front());
-}
-
-void SyntheticGestureController::Flush(base::TimeTicks timestamp) {
-  if (pending_gesture_queue_.empty())
-    return;
-
-  if (last_tick_time_.is_null()) {
-    last_tick_time_ = timestamp;
-    gesture_target_->SetNeedsFlush();
-    return;
-  }
-
-  base::TimeDelta interval = timestamp - last_tick_time_;
-  last_tick_time_ = timestamp;
-  SyntheticGesture::Result result =
-      pending_gesture_queue_.front()->ForwardInputEvents(interval,
-                                                         gesture_target_.get());
-
-  if (result == SyntheticGesture::GESTURE_RUNNING) {
-    gesture_target_->SetNeedsFlush();
-    return;
-  }
-
-  StopGesture(*pending_gesture_queue_.front(), result);
-  pending_gesture_queue_.erase(pending_gesture_queue_.begin());
-
-  if (!pending_gesture_queue_.empty()) {
-    StartGesture(*pending_gesture_queue_.front());
-  } else {
-    // Reset last_tick_time_ so that we don't use an old value when a new
-    // gestures is queued.
-    last_tick_time_ = base::TimeTicks();
-  }
-}
-
-void SyntheticGestureController::StartGesture(const SyntheticGesture& gesture) {
-  TRACE_EVENT_ASYNC_BEGIN0("benchmark", "SyntheticGestureController::running",
-                           &gesture);
-  gesture_target_->SetNeedsFlush();
-}
-
-void SyntheticGestureController::StopGesture(
-    const SyntheticGesture& gesture, SyntheticGesture::Result result) {
-  DCHECK_NE(result, SyntheticGesture::GESTURE_RUNNING);
-  TRACE_EVENT_ASYNC_END0("benchmark", "SyntheticGestureController::running",
-                         &gesture);
-
-  gesture_target_->OnSyntheticGestureCompleted(result);
-}
-
-}  // namespace content