Bug 856361. Part 1: Fix comments for MediaInputPort flags to reflect reality. r=jesup

--HG--
extra : rebase_source : 8828d63f75b41500f9c7af5a4d6cf97740fe7215

content/media/MediaStreamGraph.h

@@ -764,10 +764,10 @@ public:
    * each other.
    */
   enum {
-    // When set, blocking on the input stream forces blocking on the output
+    // When set, blocking on the output stream forces blocking on the input
     // stream.
     FLAG_BLOCK_INPUT = 0x01,
-    // When set, blocking on the output stream forces blocking on the input
+    // When set, blocking on the input stream forces blocking on the output
     // stream.
     FLAG_BLOCK_OUTPUT = 0x02
   };