Snap widgets to pixel boundary on ash

ash/snap_to_pixel_layout_manager.cc

Index: ash/snap_to_pixel_layout_manager.cc
diff --git a/ash/snap_to_pixel_layout_manager.cc b/ash/snap_to_pixel_layout_manager.cc
new file mode 100644
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--- /dev/null
+++ b/ash/snap_to_pixel_layout_manager.cc
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+// Copyright 2014 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/snap_to_pixel_layout_manager.h"
+
+#include "ash/wm/window_properties.h"
+#include "ash/wm/window_util.h"
+#include "ui/aura/window.h"
+
+namespace ash {
+
+SnapToPixelLayoutManager::SnapToPixelLayoutManager(aura::Window* container) {
+  DCHECK(container->GetProperty(kSnapChildrenToPixelBoundary));
+}
+
+SnapToPixelLayoutManager::~SnapToPixelLayoutManager() {
+}
+
+void SnapToPixelLayoutManager::OnWindowResized() {
+}
+
+void SnapToPixelLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
+}
+
+void SnapToPixelLayoutManager::OnWillRemoveWindowFromLayout(
+    aura::Window* child) {
+}
+
+void SnapToPixelLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) {
+}
+
+void SnapToPixelLayoutManager::OnChildWindowVisibilityChanged(
+    aura::Window* child,
+    bool visibile) {
+}
+
+void SnapToPixelLayoutManager::SetChildBounds(
+    aura::Window* child,
+    const gfx::Rect& requested_bounds) {
+  SetChildBoundsDirect(child, requested_bounds);
+  wm::SnapWindowToPixelBoundary(child);
+}
+
+}  // namespace ash