Make disable vsync run the renderer independently

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 259 matching lines @@
 cc::LayerTreeSettings RenderWidgetCompositor::GenerateLayerTreeSettings(
     const base::CommandLine& cmd,
     CompositorDependencies* compositor_deps,
     float device_scale_factor) {
   cc::LayerTreeSettings settings;
 
   // For web contents, layer transforms should scale up the contents of layers
   // to keep content always crisp when possible.
   settings.layer_transforms_should_scale_layer_contents = true;
 
-  if (cmd.HasSwitch(switches::kDisableGpuVsync)) {
-    std::string display_vsync_string =
-        cmd.GetSwitchValueASCII(switches::kDisableGpuVsync);
-    if (display_vsync_string == "gpu") {
-      settings.renderer_settings.disable_display_vsync = true;
-    } else if (display_vsync_string == "beginframe") {
-      settings.wait_for_beginframe_interval = false;
-    } else {
-      settings.renderer_settings.disable_display_vsync = true;
-      settings.wait_for_beginframe_interval = false;
-    }
-  }
   settings.main_frame_before_activation_enabled =
       cmd.HasSwitch(cc::switches::kEnableMainFrameBeforeActivation);
 
   // TODO(danakj): This should not be a setting O_O; it should change when the
   // device scale factor on LayerTreeHost changes.
   settings.default_tile_size = CalculateDefaultTileSize(device_scale_factor);
   if (cmd.HasSwitch(switches::kDefaultTileWidth)) {
     int tile_width = 0;
     GetSwitchValueAsInt(cmd, switches::kDefaultTileWidth, 1,
                         std::numeric_limits<int>::max(), &tile_width);
@@ skipping 839 matching lines @@
 
   remote_proto_channel_receiver_->OnProtoReceived(std::move(deserialized));
 }
 
 void RenderWidgetCompositor::SetPaintedDeviceScaleFactor(
     float device_scale) {
   layer_tree_host_->GetLayerTree()->SetPaintedDeviceScaleFactor(device_scale);
 }
 
 }  // namespace content