Add the /profile flag to linker options for official builds.

build/internal/release_impl_official.gypi

Index: build/internal/release_impl_official.gypi
===================================================================
--- build/internal/release_impl_official.gypi	(revision 87517)
+++ build/internal/release_impl_official.gypi	(working copy)
@@ -16,6 +16,9 @@
     },
     'VCLinkerTool': {
       'LinkTimeCodeGeneration': '1',
+      # The /profile flag causes the linker to add a "FIXUP"
+      # debug stream to the generated PDB.
+      'Profile': 'true',

[M-A Ruel, 2011/06/02 13:23:02]

Add a comment along the lines:
# /PROFILE is only available only in Enterprise (team development) versions.
Simply comment out that line if you have a lower version and what do to an
official build.

[Sigurður Ásgeirsson, 2011/06/02 13:33:46]

Done.

     },
   },
 }