Clean up Mac swap acknowledgement code

ui/views/cocoa/bridged_native_widget.mm

 // Copyright 2014 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.
 
 #import "ui/views/cocoa/bridged_native_widget.h"
 
 #import <objc/runtime.h>
 
 #include "base/logging.h"
 #import "base/mac/foundation_util.h"
@@ skipping 870 matching lines @@
   return base::Closure();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // BridgedNativeWidget, AcceleratedWidgetMac:
 
 NSView* BridgedNativeWidget::AcceleratedWidgetGetNSView() const {
   return compositor_superview_;
 }
 
-bool BridgedNativeWidget::AcceleratedWidgetShouldIgnoreBackpressure() const {
-  return true;
-}
-
 void BridgedNativeWidget::AcceleratedWidgetGetVSyncParameters(
   base::TimeTicks* timebase, base::TimeDelta* interval) const {
   // TODO(tapted): Add vsync support.
   *timebase = base::TimeTicks();
   *interval = base::TimeDelta();
 }
 
-void BridgedNativeWidget::AcceleratedWidgetSwapCompleted(
-    const std::vector<ui::LatencyInfo>& latency_info) {
+void BridgedNativeWidget::AcceleratedWidgetSwapCompleted() {
   // Ignore frames arriving "late" for an old size. A frame at the new size
   // should arrive soon.
   if (!compositor_widget_->HasFrameOfSize(GetClientAreaSize()))
     return;
 
   if (invalidate_shadow_on_frame_swap_) {
     invalidate_shadow_on_frame_swap_ = false;
     [window_ invalidateShadow];
   }
 }
 
-void BridgedNativeWidget::AcceleratedWidgetHitError() {
-  compositor_->ScheduleFullRedraw();
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // BridgedNativeWidget, BridgedNativeWidgetOwner:
 
 NSWindow* BridgedNativeWidget::GetNSWindow() {
   return window_;
 }
 
 gfx::Vector2d BridgedNativeWidget::GetChildWindowOffset() const {
   return gfx::ScreenRectFromNSRect([window_ frame]).OffsetFromOrigin();
 }
@@ skipping 250 matching lines @@
   [bridged_view_ setMouseDownCanMoveWindow:draggable];
   // AppKit will not update its cache of mouseDownCanMoveWindow unless something
   // changes. Previously we tried adding an NSView and removing it, but for some
   // reason it required reposting the mouse-down event, and didn't always work.
   // Calling the below seems to be an effective solution.
   [window_ setMovableByWindowBackground:NO];
   [window_ setMovableByWindowBackground:YES];
 }
 
 }  // namespace views