Remove FileUtilProxy:DeleteFile().

base/files/file_util_proxy.cc

Index: base/files/file_util_proxy.cc
diff --git a/base/files/file_util_proxy.cc b/base/files/file_util_proxy.cc
index 633d162599c67a0cfe27cf84db37a05ab0321663..54a56610630ec77d93d5e9d1635baa9c8f893b53 100644
--- a/base/files/file_util_proxy.cc
+++ b/base/files/file_util_proxy.cc
@@ -48,19 +48,6 @@ class GetFileInfoHelper {
   DISALLOW_COPY_AND_ASSIGN(GetFileInfoHelper);
 };
 
-File::Error DeleteAdapter(const FilePath& file_path, bool recursive) {
-  if (!PathExists(file_path)) {
-    return File::FILE_ERROR_NOT_FOUND;
-  }
-  if (!base::DeleteFile(file_path, recursive)) {
-    if (!recursive && !base::IsDirectoryEmpty(file_path)) {
-      return File::FILE_ERROR_NOT_EMPTY;
-    }
-    return File::FILE_ERROR_FAILED;
-  }
-  return File::FILE_OK;
-}
-
 }  // namespace
 
 // Retrieves the information about a file. It is invalid to pass NULL for the
@@ -78,17 +65,6 @@ bool FileUtilProxy::GetFileInfo(
 }
 
 // static
-bool FileUtilProxy::DeleteFile(TaskRunner* task_runner,
-                               const FilePath& file_path,
-                               bool recursive,
-                               const StatusCallback& callback) {
-  return base::PostTaskAndReplyWithResult(
-      task_runner, FROM_HERE,
-      Bind(&DeleteAdapter, file_path, recursive),
-      callback);
-}
-
-// static
 bool FileUtilProxy::Touch(
     TaskRunner* task_runner,
     const FilePath& file_path,