Adding checks to guard against buffer overruns in QuotaFileIO::Write and base::FileUtilProxy::Write
Also made some minor changes to fix lint warnings.
There are no tests for base::FileUtilProxy.
BUG= http://code.google.com/p/nativeclient/issues/detail?id=2076
TEST= test_shell_tests
Review URL: http://codereview.chromium.org/7651002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97147 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: a88016d19c4e05687cc9b1cf10fda7ef849c3db9
diff --git a/base/file_util_proxy.h b/base/file_util_proxy.h
index 928004a..872da44 100644
--- a/base/file_util_proxy.h
+++ b/base/file_util_proxy.h
@@ -168,6 +168,7 @@
// Writes to a file. If |offset| is greater than the length of the file,
// |false| is returned. On success, the file pointer is moved to position
// |offset + bytes_to_write| in the file. The callback can be NULL.
+ // |bytes_to_write| must be greater than zero.
static bool Write(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
PlatformFile file,