Index: ppapi/proxy/ppapi_messages.h |
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h |
index 8f5b7ce4b40658c3693ab446783a97d2ea43a804..56acc45f311048e16182ebfcca910c617fe7e1a1 100644 |
--- a/ppapi/proxy/ppapi_messages.h |
+++ b/ppapi/proxy/ppapi_messages.h |
@@ -522,6 +522,8 @@ IPC_MESSAGE_CONTROL2(PpapiMsg_LoadPlugin, |
// Creates a channel to talk to a renderer. The plugin will respond with |
// PpapiHostMsg_ChannelCreated. |
+// If |renderer_pid| is base::kNullProcessId, this is a channel used by the |
+// browser itself. |
IPC_MESSAGE_CONTROL3(PpapiMsg_CreateChannel, |
base::ProcessId /* renderer_pid */, |
int /* renderer_child_id */, |