Adjust expectations.
Adjust expectations.

  - xp-release-dual-core/moz/vm_peak_b/vm_pk_b (see bug 75060)
  - xp-release-dual-core/moz/total_op_b/IO_op_b (system change)
  - xp-release-dual-core/moz/total_op_r/IO_op_r (system change)
  - xp-release-dual-core/startup/warm/t (system change)

BUG=75060
TEST=perf steps are green
TBR=nsylvain@chromium.org

Review URL: http://codereview.chromium.org/6623046

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@77097 0039d316-1c4b-4281-b951-d872f2087c98

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