Revert 148684 - Update expectations.

Updated total_byte_r instead total_op_r. Will submit a separate CL to update total_op_r.

xp-release-dual-core/moz/total_op_r: http://build.chromium.org/f/chromium/perf/xp-release-dual-core/moz/report.html?history=150&rev=148651&graph=total_op_r

TBR=cmp
BUG=139267
Review URL: https://chromiumcodereview.appspot.com/10829052

TBR=rtenneti@google.com
Review URL: https://chromiumcodereview.appspot.com/10820044

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148704 0039d316-1c4b-4281-b951-d872f2087c98

tools/perf_expectations/perf_expectations.json

@@ -423,7 +423,7 @@
  "xp-release-dual-core/morejs/times/t": {"reva": 131574, "revb": 127228, "improve": -452, "regress": 456, "sha1": "21ef0dc0"},
  "xp-release-dual-core/moz/times/t": {"reva": 147678, "revb": 147799, "improve": -35, "regress": 61, "sha1": "0d686973"},
  "xp-release-dual-core/moz/total_byte_b/IO_b": {"reva": 147565, "revb": 148240, "improve": 176, "regress": 2496, "sha1": "5e972642"},
- "xp-release-dual-core/moz/total_byte_r/IO_r": {"reva": 148636, "revb": 148651, "improve": 369, "regress": 419, "sha1": "909c7904"},
+ "xp-release-dual-core/moz/total_byte_r/IO_r": {"reva": 148220, "revb": 148240, "improve": 358, "regress": 431, "sha1": "41aa8cef"},
  "xp-release-dual-core/moz/total_op_b/IO_op_b": {"reva": 141869, "revb": 142490, "improve": 169, "regress": 2089, "sha1": "2f018b43"},
  "xp-release-dual-core/moz/total_op_r/IO_op_r": {"reva": 143714, "revb": 143900, "improve": -835, "regress": -290, "sha1": "82c25dc1"},
  "xp-release-dual-core/moz/vm_peak_b/vm_pk_b": {"reva": 137781, "revb": 138227, "improve": -1565492, "regress": 2464359, "sha1": "0e00a85f"},