ipc: Update Message::FindNext to parse brokered attachments.

ipc/attachment_broker_privileged_win_unittest.cc

Index: ipc/attachment_broker_privileged_win_unittest.cc
diff --git a/ipc/attachment_broker_privileged_win_unittest.cc b/ipc/attachment_broker_privileged_win_unittest.cc
index 6e8f8814371c58eb0481096ae1b73d9b85840b6b..da33c2e9c8078cfea4e50be25b3071945ea2dfa9 100644
--- a/ipc/attachment_broker_privileged_win_unittest.cc
+++ b/ipc/attachment_broker_privileged_win_unittest.cc
@@ -18,6 +18,8 @@
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_test_base.h"
 
+// TODO(erikchen): Temporarily disabled. http://crbug.com/493414.

[Tom Sepez, 2015/09/01 18:01:54]

Do not comment out disabled test code.  Instead, name your test
DISABLED_SendHandleWin and so on and the test harness will not run it.

[erikchen, 2015/09/04 02:13:39]

Not sure what I was thinking. I also moved this into a separate CL.

+/*
 namespace {
 
 const char kDataBuffer[] = "This is some test data to write to the file.";
@@ -308,6 +310,7 @@ TEST_F(IPCAttachmentBrokerPrivilegedWinTest, SendHandleToSelf) {
 
 // Similar to SendHandle, except this test uses the HandleWin class.
 TEST_F(IPCAttachmentBrokerPrivilegedWinTest, SendHandleWin) {
+
   Init("SendHandleWin");
 
   CommonSetUp();
@@ -429,3 +432,4 @@ MULTIPROCESS_IPC_TEST_CLIENT_MAIN(SendHandleWin) {
 }
 
 }  // namespace
+*/