Add support for X11 workspaces

ui/views/widget/desktop_aura/desktop_native_widget_aura.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 "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
@@ skipping 1139 matching lines @@
     return;
 
   gfx::Rect new_bounds = gfx::Rect(host->window()->bounds().size());
   content_window_->SetBounds(new_bounds);
   // Can be NULL at start.
   if (content_window_container_)
     content_window_container_->SetBounds(new_bounds);
   native_widget_delegate_->OnNativeWidgetSizeChanged(new_bounds.size());
 }
 
+void DesktopNativeWidgetAura::OnHostWorkspaceChanged(
+    const aura::WindowTreeHost* host,
+    int workspace_id) {
+  native_widget_delegate_->OnNativeWidgetWorkspaceChanged(workspace_id);
+}
+
 void DesktopNativeWidgetAura::OnHostMoved(const aura::WindowTreeHost* host,
                                           const gfx::Point& new_origin) {
   TRACE_EVENT1("views", "DesktopNativeWidgetAura::OnHostMoved",
                "new_origin", new_origin.ToString());
 
   native_widget_delegate_->OnNativeWidgetMove();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopNativeWidgetAura, private:
@@ skipping 12 matching lines @@
   if (cursor_reference_count_ == 0) {
     // We are the last DesktopNativeWidgetAura instance, and we are responsible
     // for cleaning up |cursor_manager_|.
     delete cursor_manager_;
     native_cursor_manager_ = NULL;
     cursor_manager_ = NULL;
   }
 }
 
 }  // namespace views