Move PathExists to base namespace.

chrome/common/extensions/unpacker_unittest.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 "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 18 matching lines @@
                  << temp_dir_.path().LossyDisplayName();
     LOG(WARNING) << temp_dir_.Delete();
   }
 
   void SetupUnpacker(const std::string& crx_name) {
     base::FilePath original_path;
     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &original_path));
     original_path = original_path.AppendASCII("extensions")
         .AppendASCII("unpacker")
         .AppendASCII(crx_name);
-    ASSERT_TRUE(file_util::PathExists(original_path)) << original_path.value();
+    ASSERT_TRUE(base::PathExists(original_path)) << original_path.value();
 
     // Try bots won't let us write into DIR_TEST_DATA, so we have to create
     // a temp folder to play in.
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
     base::FilePath crx_path = temp_dir_.path().AppendASCII(crx_name);
     ASSERT_TRUE(base::CopyFile(original_path, crx_path)) <<
         "Original path " << original_path.value() <<
         ", Crx path " << crx_path.value();
 
@@ skipping 118 matching lines @@
   SetupUnpacker("bad_image.crx");
   EXPECT_FALSE(unpacker_->Run());
   EXPECT_TRUE(StartsWith(unpacker_->error_message(),
               ASCIIToUTF16(kExpected),
               false)) << "Expected prefix: \"" << kExpected
                       << "\", actual error: \"" << unpacker_->error_message()
                       << "\"";
 }
 
 }  // namespace extensions