Implement an IsAllowed function in the pepper PPB_Broker_Trusted API

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index 7c4a5804680d048437e06dfd3b545a1980742554..2192c458b339677e211702dd15aaab58db62cd18 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -1433,6 +1433,10 @@ IPC_SYNC_MESSAGE_CONTROL2_2(PpapiHostMsg_ResourceSyncCall,
 //-----------------------------------------------------------------------------
 // Messages for resources using call/reply above.
 
+// Broker.
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_Broker_Create)
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_Broker_IsAllowed)

[brettw, 2012/12/05 23:00:26]

Can you document this here? I.e. that it's a call and the reply's error value
contains the result of the query. I'd like to start using the format for the
Talk interface below (big section for interface name, then separate comments for
each message).

[raymes, 2012/12/07 21:32:19]

Done.

+
 // File chooser.
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_FileChooser_Create)
 IPC_MESSAGE_CONTROL4(PpapiHostMsg_FileChooser_Show,