ChildProcessSecurityPolicy: Port FileAPIMessageFilter to use new checks

content/browser/fileapi/browser_file_system_helper.h

Index: content/browser/fileapi/browser_file_system_helper.h
diff --git a/content/browser/fileapi/browser_file_system_helper.h b/content/browser/fileapi/browser_file_system_helper.h
index ba1e0943628c90332e00a7ba656af3ce2c36ede8..ad44ced5064a9574a4f621b9948b52d1b85bb462 100644
--- a/content/browser/fileapi/browser_file_system_helper.h
+++ b/content/browser/fileapi/browser_file_system_helper.h
@@ -32,14 +32,6 @@ CreateFileSystemContext(
 CONTENT_EXPORT bool FileSystemURLIsValid(fileapi::FileSystemContext* context,
                                          const fileapi::FileSystemURL& url);
 
-// Check whether a process has permission to access the file system URL.
-CONTENT_EXPORT bool CheckFileSystemPermissionsForProcess(
-    fileapi::FileSystemContext* context,
-    int process_id,
-    const fileapi::FileSystemURL& url,
-    int permissions,
-    base::PlatformFileError* error);
-
 // Get the platform path from a file system URL. This needs to be called
 // on the FILE thread.
 CONTENT_EXPORT void SyncGetPlatformPath(fileapi::FileSystemContext* context,