base: Remove the string logging from CHECK().

extensions/shell/browser/shell_extension_system.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 "extensions/shell/browser/shell_extension_system.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 27 matching lines @@
       store_factory_(new ValueStoreFactoryImpl(browser_context->GetPath())),
       weak_factory_(this) {}
 
 ShellExtensionSystem::~ShellExtensionSystem() {
 }
 
 const Extension* ShellExtensionSystem::LoadApp(const base::FilePath& app_dir) {
   // app_shell only supports unpacked extensions.
   // NOTE: If you add packed extension support consider removing the flag
   // FOLLOW_SYMLINKS_ANYWHERE below. Packed extensions should not have symlinks.
-  CHECK(base::DirectoryExists(app_dir)) << app_dir.AsUTF8Unsafe();
+  CHECK(base::DirectoryExists(app_dir));
   int load_flags = Extension::FOLLOW_SYMLINKS_ANYWHERE;
   std::string load_error;
   scoped_refptr<Extension> extension = file_util::LoadExtension(
       app_dir, Manifest::COMMAND_LINE, load_flags, &load_error);
   if (!extension.get()) {
     LOG(ERROR) << "Loading extension at " << app_dir.value()
                << " failed with: " << load_error;
     return nullptr;
   }
 
@@ skipping 140 matching lines @@
 }
 
 void ShellExtensionSystem::OnExtensionRegisteredWithRequestContexts(
     scoped_refptr<Extension> extension) {
   ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
   registry->AddReady(extension);
   registry->TriggerOnReady(extension.get());
 }
 
 }  // namespace extensions