Add builder for opus test in prevision of rolls.

This CL introduces an ad-hoc builder for roll of opus into chromium.
  1/ Used as pres-submit validation.
  2/ Runs dedicated tests and benchmarks for a fixed Android model.

The point 2/ shall be completed in follow-up CLs.

Bug: chromium:1002973
Change-Id: Idb5c8b46ab68d8a9d63a864594396ac021a22746
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816555
Commit-Queue: Yves Gerey <yvesg@google.com>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704847}

infra/config/cr-buildbucket.cfg

@@ -3950,6 +3950,12 @@ buckets {
     }
 
     # Keep builders sorted by OS, then name.
+    builders {
+      mixins: "android-try"
+      mixins: "builderless"
+      mixins: "linux-xenial"
+      name: "android-opus-kitkat-arm-rel"
+    }
     builders {
       mixins: "android-angle-try"
       mixins: "goma-rbe-prod"

infra/config/generated/cr-buildbucket.cfg

@@ -3950,6 +3950,12 @@ buckets {
     }
 
     # Keep builders sorted by OS, then name.
+    builders {
+      mixins: "android-try"
+      mixins: "builderless"
+      mixins: "linux-xenial"
+      name: "android-opus-kitkat-arm-rel"
+    }
     builders {
       mixins: "android-angle-try"
       mixins: "goma-rbe-prod"

infra/config/generated/luci-milo.cfg

@@ -4127,6 +4127,9 @@ consoles {
   repo_url: "https://chromium.googlesource.com/chromium/src"
   refs: "refs/heads/master"
   manifest_name: "REVISION"
+  builders {
+    name: "buildbucket/luci.chromium.try/android-opus-kitkat-arm-rel"
+  }
   builders {
     name: "buildbucket/luci.chromium.try/android_archive_rel_ng"
   }

infra/config/luci-milo.cfg

@@ -4127,6 +4127,9 @@ consoles {
   repo_url: "https://chromium.googlesource.com/chromium/src"
   refs: "refs/heads/master"
   manifest_name: "REVISION"
+  builders {
+    name: "buildbucket/luci.chromium.try/android-opus-kitkat-arm-rel"
+  }
   builders {
     name: "buildbucket/luci.chromium.try/android_archive_rel_ng"
   }

testing/buildbot/gn_isolate_map.pyl

@@ -2103,6 +2103,11 @@
     "label": "//ios/testing:ocmock_support_unittests",
     "type": "raw",
   },
+  "opus_decoder_unittests": {
+    "args": [],
+    "label": "//third_party/opus:test_opus_decode",
+    "type": "raw",
+  },
   "origin_policy_parser_fuzzer": {
     "label": "//content/test/fuzzer:origin_policy_parser_fuzzer",
     "type": "fuzzer",

testing/buildbot/test_suites.pyl

@@ -4594,6 +4594,13 @@
       }
     },
 
+    'opus_roll_validation_tests': {
+      'opus_decoder_unittests': {
+        # Ad-hoc binary which returns 0 on success.
+       'test': 'audio_decoder_unittests',
+      },
+    },
+
     'ozone_linux_gtests': {
       'services_unittests': {},
       'ozone_unittests': {},

testing/buildbot/tryserver.chromium.android.json

@@ -376,6 +376,30 @@
       }
     ]
   },
+  "android-opus-kitkat-arm-rel": {
+    "isolated_scripts": [
+      {
+        "isolate_name": "opus_decoder_unittests",
+        "merge": {
+          "args": [],
+          "script": "//testing/merge_scripts/standard_isolated_script_merge.py"
+        },
+        "name": "opus_decoder_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "device_os": "KTU84P",
+              "device_os_type": "userdebug",
+              "device_type": "hammerhead",
+              "os": "Android"
+            }
+          ]
+        },
+        "test": "audio_decoder_unittests"
+      }
+    ]
+  },
   "android_blink_rel": {
     "gtest_tests": [
       {

testing/buildbot/waterfalls.pyl

@@ -4420,6 +4420,16 @@
         },
         'os_type': 'android',
       },
+      'android-opus-kitkat-arm-rel': {
+        'mixins': [
+          'kitkat',
+          'hammerhead',
+        ],
+        'os_type': 'android',
+        'test_suites': {
+          'isolated_scripts': 'opus_roll_validation_tests',
+        },
+      },
       'android_blink_rel': {
         'mixins': [
           'kitkat',

tools/mb/mb_config.pyl

@@ -649,6 +649,7 @@
     },
 
     'tryserver.chromium.android': {
+      'android-opus-kitkat-arm-rel': 'android_release_trybot',
       # TODO(crbug/597596): Switch this back to debug_trybot when cronet's
       # shared library loading is fixed.
       'android-cronet-arm-dbg': 'android_cronet_debug_static_bot_arm_no_neon',