[Aura] Refresh status area widget bounds on StatusAreaView layout

ui/aura_shell/status_area_layout_manager.cc

Index: ui/aura_shell/status_area_layout_manager.cc
diff --git a/ui/aura_shell/status_area_layout_manager.cc b/ui/aura_shell/status_area_layout_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0ac94edec78bacbf87c47be8aff3b8d311633652
--- /dev/null
+++ b/ui/aura_shell/status_area_layout_manager.cc
@@ -0,0 +1,62 @@
+// Copyright (c) 2011 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_shell/status_area_layout_manager.h"
+
+#include "base/auto_reset.h"
+#include "ui/aura_shell/shelf_layout_manager.h"
+
+namespace aura_shell {
+namespace internal {
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, public:
+
+StatusAreaLayoutManager::StatusAreaLayoutManager(ShelfLayoutManager* shelf)
+    : in_layout_(false),
+      shelf_(shelf) {
+}
+
+StatusAreaLayoutManager::~StatusAreaLayoutManager() {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, aura::LayoutManager implementation:
+
+void StatusAreaLayoutManager::OnWindowResized() {
+  LayoutStatusArea();
+}
+
+void StatusAreaLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
+}
+
+void StatusAreaLayoutManager::OnWillRemoveWindowFromLayout(
+    aura::Window* child) {
+}
+
+void StatusAreaLayoutManager::OnChildWindowVisibilityChanged(
+    aura::Window* child, bool visible) {
+}
+
+void StatusAreaLayoutManager::SetChildBounds(
+    aura::Window* child, const gfx::Rect& requested_bounds) {
+  SetChildBoundsDirect(child, requested_bounds);
+  if (!in_layout_)
+    LayoutStatusArea();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, private:
+
+void StatusAreaLayoutManager::LayoutStatusArea() {
+  // Shelf layout manager may be already doing layout.
+  if (shelf_->in_layout())
+    return;
+
+  AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
+  shelf_->LayoutShelf();
+}
+
+}  // internal
+}  // aura_shell