Update swarming dimension of steps on 'Win 10 High-DPI Perf' builer

NOTRY=true  # tests are covered by CQ

Bug: 836446
Change-Id: I65548078aa4c280fa0be6f29ed236e41b4194ee3
Reviewed-on: https://chromium-review.googlesource.com/1042275Reviewed-by: Emily Hanley <eyaich@chromium.org>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#555809}

tools/perf/core/benchmark_sharding_map.json

@@ -1782,7 +1782,7 @@
     }
   },
   "Win 10 High-DPI Perf": {
-    "build117-b1": {
+    "build194-b7": {
       "benchmarks": [
         "blink_perf.dom",
         "blink_perf.paint",
@@ -1800,7 +1800,7 @@
         "v8.runtime_stats.top_25"
       ]
     },
-    "build118-b1": {
+    "build195-b7": {
       "benchmarks": [
         "blink_perf.bindings",
         "blink_perf.canvas",
@@ -1825,7 +1825,7 @@
         "v8.browsing_mobile"
       ]
     },
-    "build119-b1": {
+    "build196-b7": {
       "benchmarks": [
         "battor.trivial_pages",
         "blink_perf.layout",
@@ -1850,7 +1850,7 @@
         "wasm"
       ]
     },
-    "build120-b1": {
+    "build197-b7": {
       "benchmarks": [
         "blink_perf.parser",
         "blink_perf.svg",

tools/perf/core/perf_data_generator.py

@@ -251,10 +251,10 @@ def get_waterfall_config():
       {
        'gpu': '8086:1616',
        'os': 'Windows-10',
-       'pool': 'Chrome-perf',
+       'pool': 'chrome.test.perf',
        'device_ids': [
-           'build117-b1', 'build118-b1',
-           'build119-b1', 'build120-b1',
+           'build194-b7', 'build195-b7',
+           'build196-b7', 'build197-b7',
            'build180-b4' # Added in https://crbug.com/695613
           ]
       }