Fix the error message in ui::ws::WindowTree::StackAbove method

services/ui/ws/window_tree.cc

 // Copyright 2014 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 "services/ui/ws/window_tree.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 1644 matching lines @@
   }
 
   WindowTree* wm_tree = display_root->window_manager_state()->window_tree();
   wm_tree->window_manager_internal_->WmDeactivateWindow(
       wm_tree->ClientWindowIdForWindow(window).id);
 }
 
 void WindowTree::StackAbove(uint32_t change_id, Id above_id, Id below_id) {
   ServerWindow* above = GetWindowByClientId(ClientWindowId(above_id));
   if (!above) {
-    DVLOG(1) << "StackAtTop failed (invalid above id)";
+    DVLOG(1) << "StackAbove failed (invalid above id)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
 
   ServerWindow* below = GetWindowByClientId(ClientWindowId(below_id));
   if (!below) {
-    DVLOG(1) << "StackAtTop failed (invalid below id)";
+    DVLOG(1) << "StackAbove failed (invalid below id)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
 
   if (!access_policy_->CanStackAbove(above, below)) {
-    DVLOG(1) << "StackAtTop failed (access denied)";
+    DVLOG(1) << "StackAbove failed (access denied)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
 
   ServerWindow* parent = above->parent();
   ServerWindow* below_parent = below->parent();
   if (!parent) {
-    DVLOG(1) << "StackAtTop failed (above unparented)";
+    DVLOG(1) << "StackAbove failed (above unparented)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
   if (!below_parent) {
-    DVLOG(1) << "StackAtTop failed (below unparented)";
+    DVLOG(1) << "StackAbove failed (below unparented)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
   if (parent != below_parent) {
-    DVLOG(1) << "StackAtTop failed (windows have different parents)";
+    DVLOG(1) << "StackAbove failed (windows have different parents)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
 
   WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(above);
   if (!display_root) {
-    DVLOG(1) << "StackAtTop (no display root)";
+    DVLOG(1) << "StackAbove (no display root)";
     client()->OnChangeCompleted(change_id, false);
     return;
   }
 
   // Window reordering assumes that it is the owner of parent who is sending
   // the message, and does not deal gracefully with other clients reordering
   // their windows. So tell the window manager to send us a reorder message.
   WindowTree* wm_tree = display_root->window_manager_state()->window_tree();
   const uint32_t wm_change_id =
       window_server_->GenerateWindowManagerChangeId(this, change_id);
@@ skipping 492 matching lines @@
   client()->OnCompleteDrop(client_window_id.id, event_flags, cursor_offset,
                            effect_bitmask, callback);
 }
 
 void WindowTree::PerformOnDragDropDone() {
   client()->OnDragDropDone();
 }
 
 }  // namespace ws
 }  // namespace ui