Start migrating the disk cache to using FilePath.

net/tools/crash_cache/crash_cache.cc

 // Copyright (c) 2006-2008 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.
 
 // This command-line program generates the set of files needed for the crash-
 // cache unit tests (DiskCacheTest,CacheBackend_Recover*). This program only
 // works properly on debug mode, because the crash functionality is not compiled
 // on release builds of the cache.
 
 #include <string>
@@ skipping 196 matching lines @@
   entry->Close();
 
   return NOT_REACHED;
 }
 
 // Generates the files for insertion and removals on heavy loaded caches.
 int LoadOperations(const std::wstring& path, RankCrashes action) {
   DCHECK(action >= disk_cache::INSERT_LOAD_1);
 
   // Work with a tiny index table (16 entries)
-  disk_cache::BackendImpl* cache = new disk_cache::BackendImpl(path, 0xf);
+  disk_cache::BackendImpl* cache =
+      new disk_cache::BackendImpl(FilePath::FromWStringHack(path), 0xf);
   if (!cache || !cache->SetMaxSize(0x100000) || !cache->Init() ||
       cache->GetEntryCount())
     return GENERIC;
 
   int seed = static_cast<int>(Time::Now().ToInternalValue());
   srand(seed);
 
   disk_cache::Entry* entry;
   for (int i = 0; i < 100; i++) {
     std::string key = GenerateKey(true);
@@ skipping 74 matching lines @@
 
   FilePath path;
   PathService::Get(base::DIR_SOURCE_ROOT, &path);
   path = path.AppendASCII("net");
   path = path.AppendASCII("data");
   path = path.AppendASCII("cache_tests");
   path = path.AppendASCII("new_crashes");
 
   return SlaveCode(path.ToWStringHack(), action);
 }