Update swarming dimension of 'Mac Pro 10.11 Perf'

NOTRY=true

Bug: 841864
Change-Id: Ia4e6e910bf19975aa96e0f9374ebded995a4a61d
Reviewed-on: https://chromium-review.googlesource.com/1057349Reviewed-by: Emily Hanley <eyaich@chromium.org>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#558277}

tools/perf/core/benchmark_sharding_map.json

@@ -1542,7 +1542,7 @@
     }
   },
   "Mac Pro 10.11 Perf": {
-    "build128-b1": {
+    "build205-b7": {
       "benchmarks": [
         "blink_perf.dom",
         "blink_perf.paint",
@@ -1560,7 +1560,7 @@
         "v8.runtime_stats.top_25"
       ]
     },
-    "build129-b1": {
+    "build206-b7": {
       "benchmarks": [
         "blink_perf.bindings",
         "blink_perf.canvas",
@@ -1586,7 +1586,7 @@
         "webrtc"
       ]
     },
-    "build130-b1": {
+    "build207-b7": {
       "benchmarks": [
         "battor.trivial_pages",
         "blink_perf.layout",
@@ -1611,7 +1611,7 @@
         "wasm"
       ]
     },
-    "build131-b1": {
+    "build208-b7": {
       "benchmarks": [
         "blink_perf.parser",
         "blink_perf.svg",
@@ -1628,7 +1628,7 @@
         "v8.browsing_desktop"
       ]
     },
-    "build132-b1": {
+    "build209-b7": {
       "benchmarks": [
         "battor.steady_state",
         "blink_perf.css",

tools/perf/core/perf_data_generator.py

@@ -370,13 +370,13 @@ def get_waterfall_config():
       {
        'gpu': '1002:6821',
        'os': 'Mac-10.11',
-       'pool': 'Chrome-perf',
+       'pool': 'chrome.tests.perf',
        'device_ids': [
-           'build128-b1', 'build129-b1',
-           'build130-b1', 'build131-b1', 'build132-b1'
+           'build205-b7', 'build206-b7',
+           'build207-b7', 'build208-b7', 'build209-b7'
           ],
        'perf_tests': [
-         ('performance_browser_tests', 'build132-b1')
+         ('performance_browser_tests', 'build209-b7')
        ]
       }
     ])