Make try-warmer builderful and add in missing mb_config

Bug: 1149606
Change-Id: I1e1c675a9098e2c11bbeb8fca9d3558a6da8f8eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2568361Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Stephanie Kim <kimstephanie@google.com>
Cr-Commit-Position: refs/heads/master@{#832586}

infra/config/generated/cr-buildbucket.cfg

@@ -20053,12 +20053,11 @@ buckets {
       name: "try-warmer"
       swarming_host: "chromium-swarm.appspot.com"
       swarming_tags: "vpython:native-python-wrapper"
-      dimensions: "builderless:1"
+      dimensions: "builder:try-warmer"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
       dimensions: "os:Ubuntu-16.04"
       dimensions: "pool:luci.chromium.ci"
-      dimensions: "ssd:0"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/master"

infra/config/subprojects/chromium/ci.star

@@ -2467,6 +2467,7 @@ ci.fyi_builder(
 
 ci.fyi_builder(
     name = "try-warmer",
+    builderless = False,
     console_view_entry = ci.console_view_entry(
         category = "infra",
         short_name = "warmer",

tools/mb/mb_config.pyl

@@ -965,6 +965,7 @@
       'linux-rel-builderful': 'gpu_tests_release_trybot_no_symbols_use_dummy_lastchange_code_coverage',
       'linux-trusty-rel': 'gpu_tests_release_trybot_no_symbols_use_dummy_lastchange',
       'linux-viz-rel': 'release_trybot',
+      'linux-warmed': 'release_trybot_no_symbols_use_dummy_lastchange_code_coverage',
       'linux-wpt-fyi-rel': 'release_trybot',
       'linux-wpt-identity-fyi-rel': 'release_trybot',
       'linux-wpt-input-fyi-rel': 'release_trybot',
@@ -2488,6 +2489,11 @@
       'release_trybot', 'disable_nacl',
     ],
 
+    'release_trybot_no_symbols_use_dummy_lastchange_code_coverage': [
+      'release_trybot', 'no_symbols', 'use_dummy_lastchange',
+      'use_clang_coverage', 'partial_code_coverage_instrumentation',
+    ],
+
     'release_trybot_paeverywhere_x86': [
       'release_trybot', 'paeverywhere', 'x86',
     ],

tools/mb/mb_config_expectations/tryserver.chromium.linux.json

@@ -551,6 +551,18 @@
       "use_goma": true
     }
   },
+  "linux-warmed": {
+    "gn_args": {
+      "coverage_instrumentation_input_file": "//.code-coverage/files_to_instrument.txt",
+      "dcheck_always_on": true,
+      "is_component_build": false,
+      "is_debug": false,
+      "symbol_level": 0,
+      "use_clang_coverage": true,
+      "use_dummy_lastchange": true,
+      "use_goma": true
+    }
+  },
   "linux-webkit-msan-rel": {
     "gn_args": {
       "is_component_build": false,