Implements core logic for Pixel Canvas

ash/wm/drag_window_controller.cc

 // Copyright (c) 2012 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 "ash/wm/drag_window_controller.h"
 
 #include <algorithm>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
 #include "ash/wm/window_util.h"
 #include "base/memory/ptr_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
+#include "ui/aura/window_tree_host.h"
 #include "ui/base/hit_test.h"
+#include "ui/compositor/compositor.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_tree_owner.h"
 #include "ui/compositor/paint_context.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/display/display.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/coordinate_conversion.h"
 #include "ui/wm/core/shadow_types.h"
 #include "ui/wm/core/window_util.h"
@@ skipping 196 matching lines @@
     if (details->layer_owner_) {
       if (index == 0)
         return details->layer_owner_.get();
       index--;
     }
   }
   return nullptr;
 }
 
 void DragWindowController::RequestLayerPaintForTest() {
-  ui::PaintContext context(nullptr, 1.0f, gfx::Rect());
+  ui::PaintContext context(nullptr, 1.0f, gfx::Rect(),
+                           window_->GetHost()->compositor()->is_pixel_canvas());
   for (auto& details : drag_windows_) {
     std::vector<ui::Layer*> layers;
     layers.push_back(details->drag_window_->layer());
     while (layers.size()) {
       ui::Layer* layer = layers.back();
       layers.pop_back();
       if (layer->delegate())
         layer->delegate()->OnPaintLayer(context);
       for (auto* child : layer->children())
         layers.push_back(child);
     }
   }
 }
 
 }  // namespace ash