Prepare a bunch of ash tests for workspace2. With Workspace2 you can't

ash/wm/workspace/workspace_manager.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/workspace/workspace_manager.h"
 
 #include <algorithm>
 
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
@@ skipping 116 matching lines @@
   workspace->RemoveWindow(window);
   CleanupWorkspace(workspace);
 }
 
 void WorkspaceManager::SetActiveWorkspaceByWindow(aura::Window* window) {
   Workspace* workspace = FindBy(window);
   if (workspace)
     workspace->Activate();
 }
 
+void WorkspaceManager::SetGridSize(int grid_size) {
+  grid_size_ = grid_size;
+}
+
 void WorkspaceManager::UpdateShelfVisibility() {
   if (shelf_)
     shelf_->UpdateVisibilityState();
 }
 
 WorkspaceWindowState WorkspaceManager::GetWindowState() const {
   if (!shelf_ || !active_workspace_)
     return WORKSPACE_WINDOW_STATE_DEFAULT;
 
   // TODO: this code needs to be made multi-display aware.
@@ skipping 201 matching lines @@
   return workspace;
 }
 
 void WorkspaceManager::CleanupWorkspace(Workspace* workspace) {
   if (workspace->type() != Workspace::TYPE_MANAGED && workspace->is_empty())
     delete workspace;
 }
 
 }  // namespace internal
 }  // namespace ash