Get chrome to link with USE_AURA

chrome/browser/ui/panels/auto_hiding_desktop_bar_aura.cc

+// 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 "chrome/browser/ui/panels/auto_hiding_desktop_bar.h"
+
+#include "base/compiler_specific.h"
+
+namespace {
+
+class AutoHidingDesktopBarAura : public AutoHidingDesktopBar {
+ public:
+  explicit AutoHidingDesktopBarAura(Observer* observer);
+  virtual ~AutoHidingDesktopBarAura() { }
+
+  // Overridden from AutoHidingDesktopBar:
+  virtual void UpdateWorkArea(const gfx::Rect& work_area) OVERRIDE;
+  virtual bool IsEnabled(Alignment alignment) OVERRIDE;
+  virtual int GetThickness(Alignment alignment) const OVERRIDE;
+  virtual Visibility GetVisibility(Alignment alignment) const OVERRIDE;
+
+ private:
+  Observer* observer_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutoHidingDesktopBarAura);
+};
+
+AutoHidingDesktopBarAura::AutoHidingDesktopBarAura(Observer* observer)
+    : observer_(observer) {
+}
+
+void AutoHidingDesktopBarAura::UpdateWorkArea(const gfx::Rect& work_area) {
+}
+
+bool AutoHidingDesktopBarAura::IsEnabled(
+    AutoHidingDesktopBar::Alignment alignment) {
+  // No taskbar exists on ChromeOS.
+  return false;
+}
+
+int AutoHidingDesktopBarAura::GetThickness(
+    AutoHidingDesktopBar::Alignment alignment) const {
+  return 0;
+}
+
+AutoHidingDesktopBar::Visibility AutoHidingDesktopBarAura::GetVisibility(
+    AutoHidingDesktopBar::Alignment alignment) const {
+  return AutoHidingDesktopBar::HIDDEN;
+}
+
+}  // namespace
+
+// static
+AutoHidingDesktopBar* AutoHidingDesktopBar::Create(Observer* observer) {
+  return new AutoHidingDesktopBarAura(observer);
+}