Move PathExists to base namespace.

net/disk_cache/backend_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/basictypes.h"
 #include "base/file_util.h"
 #include "base/port.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
@@ skipping 2936 matching lines @@
   // To make sure the file creation completed we need to call open again so that
   // we block until it actually created the files.
   ASSERT_EQ(net::OK, OpenEntry(key, &entry));
   ASSERT_TRUE(entry != NULL);
   entry->Close();
   entry = NULL;
 
   // Delete one of the files in the entry.
   base::FilePath to_delete_file = cache_path_.AppendASCII(
       disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, 0));
-  EXPECT_TRUE(file_util::PathExists(to_delete_file));
+  EXPECT_TRUE(base::PathExists(to_delete_file));
   EXPECT_TRUE(disk_cache::DeleteCacheFile(to_delete_file));
 
   // Failing to open the entry should delete the rest of these files.
   ASSERT_EQ(net::ERR_FAILED, OpenEntry(key, &entry));
 
   // Confirm the rest of the files are gone.
   for (int i = 1; i < disk_cache::kSimpleEntryFileCount; ++i) {
     base::FilePath
         should_be_gone_file(cache_path_.AppendASCII(
             disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, i)));
-    EXPECT_FALSE(file_util::PathExists(should_be_gone_file));
+    EXPECT_FALSE(base::PathExists(should_be_gone_file));
   }
 }
 
 TEST_F(DiskCacheBackendTest, SimpleCacheOpenBadFile) {
   SetSimpleCacheMode();
   InitCache();
 
   const char* key = "the first key";
   disk_cache::Entry* entry = NULL;
 
@@ skipping 84 matching lines @@
   delete cache;
   DisableIntegrityCheck();
 }
 
 TEST_F(DiskCacheBackendTest, SimpleCacheFixEnumerators) {
   SetSimpleCacheMode();
   BackendFixEnumerators();
 }
 
 #endif  // !defined(OS_WIN)