Update comments about ISO spec on aac parser.

media/formats/mp4/aac_unittest.cc

Index: media/formats/mp4/aac_unittest.cc
diff --git a/media/formats/mp4/aac_unittest.cc b/media/formats/mp4/aac_unittest.cc
index a31952a727bf561bbba95af718c19eeeb48c26ae..8a079bca6d8fd7201812b7aa7939286c9af82ce2 100644
--- a/media/formats/mp4/aac_unittest.cc
+++ b/media/formats/mp4/aac_unittest.cc
@@ -110,7 +110,7 @@ TEST_F(AACTest, ExtensionTest) {
 // Test implicit SBR with mono channel config.
 // Mono channel layout should only be reported if SBR is not
 // specified. Otherwise stereo should be reported.
-// See ISO-14496-3 Section 1.6.6.1.2 for details about this special casing.
+// See ISO 14496-3:2005 Section 1.6.5.3 for details about this special casing.
 TEST_F(AACTest, ImplicitSBR_ChannelConfig0) {
   uint8 buffer[] = {0x13, 0x08};
   std::vector<uint8> data;