WIP - Gutterless resize on Windows

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/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.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_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/view_prop.h"
 #include "ui/compositor/dip_util.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/display.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/size_conversions.h"
 #include "ui/gfx/screen.h"
 
+#if defined(OS_WIN)
+#include "ui/base/window_resize_helper.h"
+#endif
+
 namespace aura {
 
 const char kWindowTreeHostForAcceleratedWidget[] =
     "__AURA_WINDOW_TREE_HOST_ACCELERATED_WIDGET__";
 
 float GetDeviceScaleFactorFromDisplay(Window* window) {
   gfx::Display display = gfx::Screen::GetScreenFor(window)->
       GetDisplayNearestWindow(window);
   DCHECK(display.is_valid());
   return display.device_scale_factor();
@@ skipping 197 matching lines @@
   // ~Window, but by that time any calls to virtual methods overriden here (such
   // as GetRootWindow()) result in Window's implementation. By destroying here
   // we ensure GetRootWindow() still returns this.
   //window()->RemoveOrDestroyChildren();
 }
 
 void WindowTreeHost::CreateCompositor() {
   DCHECK(Env::GetInstance());
   ui::ContextFactory* context_factory = Env::GetInstance()->context_factory();
   DCHECK(context_factory);
-  compositor_.reset(
-      new ui::Compositor(context_factory, base::ThreadTaskRunnerHandle::Get()));
+#if defined(OS_WIN)
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner =
+      ui::WindowResizeHelper::Get()->task_runner();
+#else
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner =
+      base::ThreadTaskRunnerHandle::Get();
+#endif
+  compositor_.reset(new ui::Compositor(context_factory, task_runner));
   if (!dispatcher()) {
     window()->Init(ui::LAYER_NOT_DRAWN);
     window()->set_host(this);
     window()->SetName("RootWindow");
     window()->SetEventTargeter(
         scoped_ptr<ui::EventTargeter>(new WindowTargeter()));
     dispatcher_.reset(new WindowEventDispatcher(this));
   }
 }
 
@@ skipping 56 matching lines @@
   client::CursorClient* cursor_client = client::GetCursorClient(window());
   if (cursor_client) {
     const gfx::Display& display =
         gfx::Screen::GetScreenFor(window())->GetDisplayNearestWindow(window());
     cursor_client->SetDisplay(display);
   }
   dispatcher()->OnCursorMovedToRootLocation(root_location);
 }
 
 }  // namespace aura