Implements core logic for Pixel Canvas

ui/aura/window_tree_host.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 "ui/aura/window_tree_host.h"
 
 #include "base/command_line.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "components/viz/common/switches.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_port.h"
 #include "ui/aura/window_targeter.h"
 #include "ui/aura/window_tree_host_observer.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/input_method_factory.h"
 #include "ui/base/layout.h"
 #include "ui/base/view_prop.h"
+#include "ui/compositor/compositor_switches.h"
 #include "ui/compositor/dip_util.h"
 #include "ui/compositor/layer.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/point3_f.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ skipping 230 matching lines @@
       Env::GetInstance()->context_factory_private();
   bool enable_surface_synchronization =
       aura::Env::GetInstance()->mode() == aura::Env::Mode::MUS ||
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableSurfaceSynchronization);
   compositor_.reset(new ui::Compositor(
       (!context_factory_private || frame_sink_id.is_valid())
           ? frame_sink_id
           : context_factory_private->AllocateFrameSinkId(),
       context_factory, context_factory_private,
-      base::ThreadTaskRunnerHandle::Get(), enable_surface_synchronization));
+      base::ThreadTaskRunnerHandle::Get(), enable_surface_synchronization,
+      ui::IsPixelCanvasRecordingEnabled()));
   if (!dispatcher()) {
     window()->Init(ui::LAYER_NOT_DRAWN);
     window()->set_host(this);
     window()->SetName("RootWindow");
     dispatcher_.reset(new WindowEventDispatcher(this));
   }
 }
 
 void WindowTreeHost::InitCompositor() {
   display::Display display =
@@ skipping 86 matching lines @@
   client::CursorClient* cursor_client = client::GetCursorClient(window());
   if (cursor_client) {
     const display::Display& display =
         display::Screen::GetScreen()->GetDisplayNearestWindow(window());
     cursor_client->SetDisplay(display);
   }
   dispatcher()->OnCursorMovedToRootLocation(root_location);
 }
 
 }  // namespace aura