Move platform_thread to base/threading and put in the base namespace. I left ...

webkit/tools/test_shell/simple_database_system.cc

 // Copyright (c) 2010 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 "webkit/tools/test_shell/simple_database_system.h"
 
 #include "base/auto_reset.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
+#include "base/platform_thread.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/sqlite/sqlite3.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDatabase.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebString.h"
 #include "webkit/database/database_util.h"
 #include "webkit/database/vfs_backend.h"
 
 using webkit_database::DatabaseTracker;
 using webkit_database::DatabaseUtil;
 using webkit_database::VfsBackend;
@@ skipping 39 matching lines @@
   // VFS does (apparently deleting a file can sometimes fail on Windows).
   // We sleep for 10ms between retries for the same reason.
   const int kNumDeleteRetries = 3;
   int num_retries = 0;
   int error_code = SQLITE_OK;
   FilePath file_name = GetFullFilePathForVfsFile(vfs_file_name);
   do {
     error_code = VfsBackend::DeleteFile(file_name, sync_dir);
   } while ((++num_retries < kNumDeleteRetries) &&
            (error_code == SQLITE_IOERR_DELETE) &&
-           (PlatformThread::Sleep(10), 1));
+           (base::PlatformThread::Sleep(10), 1));
 
   return error_code;
 }
 
 long SimpleDatabaseSystem::GetFileAttributes(const string16& vfs_file_name) {
   return VfsBackend::GetFileAttributes(
       GetFullFilePathForVfsFile(vfs_file_name));
 }
 
 long long SimpleDatabaseSystem::GetFileSize(const string16& vfs_file_name) {
@@ skipping 103 matching lines @@
 
 FilePath SimpleDatabaseSystem::GetFullFilePathForVfsFile(
     const string16& vfs_file_name) {
   if (vfs_file_name.empty())  // temp file, used for vacuuming
     return FilePath();
 
   AutoLock file_names_auto_lock(file_names_lock_);
   DCHECK(file_names_.find(vfs_file_name) != file_names_.end());
   return file_names_[vfs_file_name];
 }