base: Remove the string logging from CHECK().

ash/display/window_tree_host_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/display/window_tree_host_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 #include <memory>
@@ skipping 663 matching lines @@
   DCHECK(controller);
   controller->MoveWindowsTo(GetPrimaryRootWindow());
   // Delete most of root window related objects, but don't delete
   // root window itself yet because the stack may be using it.
   controller->Shutdown();
   base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, controller);
 }
 
 void WindowTreeHostManager::OnDisplayRemoved(const display::Display& display) {
   AshWindowTreeHost* host_to_delete = window_tree_hosts_[display.id()];
-  CHECK(host_to_delete) << display.ToString();
+  CHECK(host_to_delete);
 
   // When the primary root window's display is removed, move the primary
   // root to the other display.
   if (primary_display_id == display.id()) {
     // Temporarily store the primary root window in
     // |primary_root_window_for_replace_| when replacing the display.
     if (window_tree_hosts_.size() == 1) {
       primary_display_id = display::kInvalidDisplayId;
       primary_tree_host_for_replace_ = host_to_delete;
       // Display for root window will be deleted when the Primary RootWindow
@@ skipping 194 matching lines @@
   SetDisplayPropertiesOnHost(ash_host, display);
 
 #if defined(OS_CHROMEOS)
   if (switches::ConstrainPointerToRoot())
     ash_host->ConfineCursorToRootWindow();
 #endif
   return ash_host;
 }
 
 }  // namespace ash