Adds fuchsia-builder-perf-fyi config

Builder is not currently active, but exists in another repo.

Bug: 1128105
Change-Id: Ic4de73c066751c7973e270bbda5358e31fb73408
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2628343Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Rohan Pavone <rohpavone@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844966}

tools/mb/mb_config.pyl

@@ -586,6 +586,7 @@
       'android-cfi-builder-perf-fyi': 'official_goma_minimal_symbols_android_thin_lto_opt',
       'android_arm64-cfi-builder-perf-fyi': 'official_goma_minimal_symbols_android_thin_lto_opt_arm64',
       'chromeos-kevin-builder-perf-fyi': 'chromeos_kevin_include_unwind_tables_official',
+      'fuchsia-builder-perf-fyi': 'official_goma_fuchsia_arm64_perf',
     },
 
     'chromium.swangle': {
@@ -2367,6 +2368,10 @@
       'official', 'goma', 'no_gnome_keyring', 'minimal_symbols',
     ],
 
+    'official_goma_fuchsia_arm64_perf': [
+      'official', 'goma', 'minimal_symbols', 'fuchsia', 'arm64',
+    ],
+
     'official_goma_linux_pgo': [
       'official', 'goma', 'static', 'no_symbols', 'pgo_phase_1',
     ],

tools/mb/mb_config_expectations/chromium.perf.fyi.json

@@ -36,5 +36,15 @@
       "ozone_platform_headless": true,
       "use_goma": true
     }
+  },
+  "fuchsia-builder-perf-fyi": {
+    "gn_args": {
+      "is_chrome_branded": true,
+      "is_official_build": true,
+      "symbol_level": 1,
+      "target_cpu": "arm64",
+      "target_os": "fuchsia",
+      "use_goma": true
+    }
   }
 }
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