Remove the --disable-begin-frame-scheduling flag

content/browser/renderer_host/delegated_frame_host.cc

 // 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.
 
 #include "content/browser/renderer_host/delegated_frame_host.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 48 matching lines @@
 }
 
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 // DelegatedFrameHost
 
 DelegatedFrameHost::DelegatedFrameHost(DelegatedFrameHostClient* client)
     : client_(client),
       compositor_(nullptr),
-      using_begin_frame_scheduling_(
-          !base::CommandLine::ForCurrentProcess()->HasSwitch(
-              cc::switches::kDisableBeginFrameScheduling)),
       tick_clock_(new base::DefaultTickClock()),
       last_output_surface_id_(0),
       pending_delegated_ack_count_(0),
       skipped_frames_(false),
       background_color_(SK_ColorRED),
       current_scale_factor_(1.f),
       can_lock_compositor_(YES_CAN_LOCK),
       delegated_frame_evictor_(new DelegatedFrameEvictor(this)) {
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   factory->GetContextFactory()->AddObserver(this);
@@ skipping 719 matching lines @@
 void DelegatedFrameHost::OnCompositingShuttingDown(ui::Compositor* compositor) {
   DCHECK_EQ(compositor, compositor_);
   ResetCompositor();
   DCHECK(!compositor_);
 }
 
 void DelegatedFrameHost::OnUpdateVSyncParameters(base::TimeTicks timebase,
                                                  base::TimeDelta interval) {
   vsync_timebase_ = timebase;
   vsync_interval_ = interval;
-  if (!using_begin_frame_scheduling_ && client_->DelegatedFrameHostIsVisible())
-    client_->DelegatedFrameHostUpdateVSyncParameters(timebase, interval);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // DelegatedFrameHost, ImageTransportFactoryObserver implementation:
 
 void DelegatedFrameHost::OnLostResources() {
   if (!surface_id_.is_null())
     EvictDelegatedFrame();
   idle_frame_subscriber_textures_.clear();
   yuv_readback_pipeline_.reset();
@@ skipping 83 matching lines @@
     cc::SurfaceManager* manager = factory->GetSurfaceManager();
     new_layer->SetShowSurface(
         surface_id_, base::Bind(&SatisfyCallback, base::Unretained(manager)),
         base::Bind(&RequireCallback, base::Unretained(manager)),
         current_surface_size_, current_scale_factor_,
         current_frame_size_in_dip_);
   }
 }
 
 }  // namespace content