base: Remove the string logging from CHECK().

ui/gfx/win/window_impl.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/gfx/win/window_impl.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/debug/alias.h"
@@ skipping 117 matching lines @@
       base::IntToString16(registered_count_++);
 
   WNDCLASSEX window_class;
   base::win::InitializeWindowClass(
       name.c_str(), &base::win::WrappedWindowProc<WindowImpl::WndProc>,
       class_info.style, 0, 0, NULL,
       reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH)), NULL,
       class_info.icon, class_info.small_icon, &window_class);
   HMODULE instance = window_class.hInstance;
   ATOM atom = RegisterClassEx(&window_class);
-  CHECK(atom) << GetLastError();
+  CHECK(atom);
 
   registered_classes_.push_back(RegisteredClass(
       class_info, name, atom, instance));
 
   return atom;
 }
 
 ClassRegistrar::RegisteredClass::RegisteredClass(const ClassInfo& info,
                                                  const base::string16& name,
                                                  ATOM atom,
@@ skipping 154 matching lines @@
 }
 
 ATOM WindowImpl::GetWindowClassAtom() {
   HICON icon = GetDefaultWindowIcon();
   HICON small_icon = GetSmallWindowIcon();
   ClassInfo class_info(initial_class_style(), icon, small_icon);
   return ClassRegistrar::GetInstance()->RetrieveClassAtom(class_info);
 }
 
 }  // namespace gfx