Remove external begin frame source parameter and settings

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 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/renderer/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 #include <limits>
 #include <string>
 #include <utility>
@@ skipping 224 matching lines @@
   cc::LayerTreeHostInProcess::InitParams params;
   params.client = this;
   params.shared_bitmap_manager = compositor_deps_->GetSharedBitmapManager();
   params.gpu_memory_buffer_manager =
       compositor_deps_->GetGpuMemoryBufferManager();
   params.settings = &settings;
   params.task_graph_runner = compositor_deps_->GetTaskGraphRunner();
   params.main_task_runner =
       compositor_deps_->GetCompositorMainThreadTaskRunner();
   params.animation_host = cc::AnimationHost::CreateMainInstance();
-  DCHECK(settings.use_compositor_frame_sink_begin_frame_source);
 
   if (cmd->HasSwitch(switches::kUseRemoteCompositing)) {
     DCHECK(!threaded_);
     params.image_serialization_processor =
         compositor_deps_->GetImageSerializationProcessor();
     layer_tree_host_ =
         cc::LayerTreeHostInProcess::CreateRemoteServer(this, &params);
   } else if (!threaded_) {
     // Single-threaded layout tests.
     layer_tree_host_ =
@@ skipping 869 matching lines @@
     float device_scale) {
   layer_tree_host_->GetLayerTree()->SetPaintedDeviceScaleFactor(device_scale);
 }
 
 void RenderWidgetCompositor::SetDeviceColorSpace(
     const gfx::ColorSpace& color_space) {
   layer_tree_host_->GetLayerTree()->SetDeviceColorSpace(color_space);
 }
 
 }  // namespace content