Switch default WM mode to managed

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/shell.h"
 #include "ash/wm/property_util.h"
@@ skipping 325 matching lines @@
   ignored_window_ = NULL;
 }
 
 void WorkspaceManager::SetWindowBoundsFromRestoreBounds(aura::Window* window) {
   const gfx::Rect* restore = GetRestoreBounds(window);
   gfx::Rect bounds;
   if (restore)
     bounds = restore->AdjustToFit(GetWorkAreaBounds());
   else
     bounds = window->bounds().AdjustToFit(GetWorkAreaBounds());
-  SetWindowBounds(window, AlignRectToGrid(bounds, grid_size_));
+  SetWindowBounds(window, bounds);
   ash::ClearRestoreBounds(window);
 }
 
 void WorkspaceManager::SetFullScreenOrMaximizedBounds(aura::Window* window) {
   if (!GetRestoreBounds(window))
     SetRestoreBounds(window, window->GetTargetBounds());
   if (wm::IsWindowMaximized(window))
     SetWindowBounds(window, GetWorkAreaBounds());
   else if (wm::IsWindowFullscreen(window))
     SetWindowBounds(window, gfx::Screen::GetMonitorAreaNearestWindow(window));
@@ skipping 49 matching lines @@
   if (type == Workspace::TYPE_MAXIMIZED)
     workspace = new MaximizedWorkspace(this);
   else
     workspace = new ManagedWorkspace(this);
   AddWorkspace(workspace);
   return workspace;
 }
 
 }  // namespace internal
 }  // namespace ash