Move ComputeDirectorySize to the base namespace.

webkit/browser/fileapi/sandbox_file_system_test_helper.cc

Index: webkit/browser/fileapi/sandbox_file_system_test_helper.cc
diff --git a/webkit/browser/fileapi/sandbox_file_system_test_helper.cc b/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
index f8a84ffa313f49f657080b7704d1a65c833240e2..316a68d1f37f78007c790f52de8aa6b53196f7b1 100644
--- a/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
+++ b/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
@@ -97,7 +97,7 @@ int64 SandboxFileSystemTestHelper::GetCachedOriginUsage() const {
 
 int64 SandboxFileSystemTestHelper::ComputeCurrentOriginUsage() {
   usage_cache()->CloseCacheFiles();
-  int64 size = file_util::ComputeDirectorySize(GetOriginRootPath());
+  int64 size = base::ComputeDirectorySize(GetOriginRootPath());
   if (file_util::PathExists(GetUsageCachePath()))
     size -= FileSystemUsageCache::kUsageFileSize;
   return size;
@@ -105,7 +105,7 @@ int64 SandboxFileSystemTestHelper::ComputeCurrentOriginUsage() {
 
 int64
 SandboxFileSystemTestHelper::ComputeCurrentDirectoryDatabaseUsage() {
-  return file_util::ComputeDirectorySize(
+  return base::ComputeDirectorySize(
       GetOriginRootPath().AppendASCII("Paths"));
 }