Really make OmitFramePointers not go.

build/internal/release_impl_official.gypi

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'includes': ['release_defaults.gypi'],
   'defines': ['OFFICIAL_BUILD'],
   'msvs_settings': {
     'VCCLCompilerTool': {
       'InlineFunctionExpansion': '2',
       'EnableIntrinsicFunctions': 'true',
+      'EnableFiberSafeOptimizations': 'true',
       'OmitFramePointers': 'false',
-      'EnableFiberSafeOptimizations': 'true',
+      # The above is not sufficient (http://crbug.com/106711): it
+      # simply eliminates an explicit "/Oy", but both /O2 and /Ox
+      # perform FPO regardless, so we must explicitly disable.
+      # We still want the false setting above to avoid having
+      # "/Oy /Oy-" and warnings about overriding.
+      'AdditionalOptions': ['/Oy-'],
     },
     'VCLibrarianTool': {
       'AdditionalOptions': [
         '/ltcg',
         '/expectedoutputsize:120000000'
       ],
     },
     'VCLinkerTool': {
       'AdditionalOptions': [
         '/time',
         # This may reduce memory fragmentation during linking.
         # The expected size is 40*1024*1024, which gives us about 10M of
         # headroom as of Dec 16, 2011.
         '/expectedoutputsize:41943040',
       ],
       'LinkTimeCodeGeneration': '1',
       # The /PROFILE flag causes the linker to add a "FIXUP" debug stream to
       # the generated PDB. According to MSDN documentation, this flag is only
       # available (or perhaps supported) in the Enterprise (team development)
       # version of Visual Studio. If this blocks your official build, simply
       # comment out this line, then  re-run "gclient runhooks".
       'Profile': 'true',
     },
   },
 }