[ios] Upstream roll Xcode 12 beta 4 (with audio workaround)

* roll ios14-sdk-simulator to build with 12a8179i_audio
* ios14-beta and ios14-sdk to run tests with 12a8179i_audio

git grep -l '12a6163b' | xargs sed -i '' -e 's/12a6163b/12a8179i_audio/g'

Tested with:
  led get-builder luci.chromium.try:ios14-sdk-simulator | \
  led edit -p 'xcode_build_version="12a8179i_audio"' | \
  led edit-cr-cl http://crrev.com/c/2340705 | \
  led launch

Bug: 1112941
Change-Id: I64c0beea00c554aa7c1c8cfa2b33383cd3e11493
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2340705Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795634}

infra/config/generated/cr-buildbucket.cfg

@@ -10135,11 +10135,11 @@ buckets {
         cipd_version: "refs/heads/master"
         cmd: "recipes"
       }
-      properties: "{\"$build/goma\":{\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"},\"$kitchen\":{\"devshell\":true,\"git_auth\":true},\"mastername\":\"chromium.fyi\",\"recipe\":\"chromium\",\"xcode_build_version\":\"12a6163b\"}"
+      properties: "{\"$build/goma\":{\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"},\"$kitchen\":{\"devshell\":true,\"git_auth\":true},\"mastername\":\"chromium.fyi\",\"recipe\":\"chromium\",\"xcode_build_version\":\"12a8179i_audio\"}"
       execution_timeout_secs: 36000
       caches {
-        name: "xcode_ios_12a6163b"
-        path: "xcode_ios_12a6163b.app"
+        name: "xcode_ios_12a8179i_audio"
+        path: "xcode_ios_12a8179i_audio.app"
       }
       build_numbers: YES
       service_account: "chromium-ci-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -24518,7 +24518,7 @@ buckets {
         cipd_version: "refs/heads/master"
         cmd: "recipes"
       }
-      properties: "{\"$build/goma\":{\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"},\"$kitchen\":{\"devshell\":true,\"git_auth\":true},\"mastername\":\"tryserver.chromium.mac\",\"recipe\":\"chromium_trybot\",\"xcode_build_version\":\"12a6163b\"}"
+      properties: "{\"$build/goma\":{\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"},\"$kitchen\":{\"devshell\":true,\"git_auth\":true},\"mastername\":\"tryserver.chromium.mac\",\"recipe\":\"chromium_trybot\",\"xcode_build_version\":\"12a8179i_audio\"}"
       execution_timeout_secs: 14400
       expiration_secs: 7200
       caches {
@@ -24526,8 +24526,8 @@ buckets {
         path: "win_toolchain"
       }
       caches {
-        name: "xcode_ios_12a6163b"
-        path: "xcode_ios_12a6163b.app"
+        name: "xcode_ios_12a8179i_audio"
+        path: "xcode_ios_12a8179i_audio.app"
       }
       build_numbers: YES
       service_account: "chromium-try-builder@chops-service-accounts.iam.gserviceaccount.com"

infra/config/lib/builders.star

@@ -133,7 +133,7 @@ xcode_cache = struct(
     x11e503a_xct12b1 = xcode_enum("xcode_ios_11e503a_xct12b1", "xcode_ios_11e503a_xct12b1.app"),
     x11e708 = xcode_enum("xcode_ios_11e708", "xcode_ios_11e708.app"),
     # xcode12
-    x12a6163b = xcode_enum("xcode_ios_12a6163b", "xcode_ios_12a6163b.app"),
+    x12a8179i_audio = xcode_enum("xcode_ios_12a8179i_audio", "xcode_ios_12a8179i_audio.app"),
 )
 
 ################################################################################

infra/config/subprojects/chromium/master-only/ci.star

@@ -1888,11 +1888,11 @@ ci.fyi_ios_builder(
         category = "iOS|iOS14",
         short_name = "sdk14",
     ),
-    caches = [xcode_cache.x12a6163b],
+    caches = [xcode_cache.x12a8179i_audio],
     executable = "recipe:chromium",
     os = os.MAC_10_15,
     properties = {
-        "xcode_build_version": "12a6163b",
+        "xcode_build_version": "12a8179i_audio",
     },
 )
 

infra/config/subprojects/chromium/master-only/try.star

@@ -648,10 +648,10 @@ try_.chromium_mac_ios_builder(
 try_.chromium_mac_ios_builder(
     name = "ios14-sdk-simulator",
     executable = "recipe:chromium_trybot",
-    caches = [xcode_cache.x12a6163b],
+    caches = [xcode_cache.x12a8179i_audio],
     os = os.MAC_10_15,
     properties = {
-        "xcode_build_version": "12a6163b",
+        "xcode_build_version": "12a8179i_audio",
     },
 )
 

testing/buildbot/mixins.pyl

@@ -960,18 +960,18 @@
       ],
     },
   },
-  # xcode 12
-  'xcode_12a6163b': {
+  # xcode 12 beta 4
+  'xcode_12a8179i_audio': {
     '$mixin_append': {
       'args': [
         '--xcode-build-version',
-        '12a6163b'
+        '12a8179i_audio'
       ],
     },
     'swarming': {
       'named_caches': [
         {
-          'name': 'xcode_ios_12a6163b',
+          'name': 'xcode_ios_12a8179i_audio',
           'path': 'Xcode.app',
         },
       ],

testing/buildbot/waterfalls.pyl

@@ -2143,7 +2143,7 @@
           'mac_10.15',
           'mac_toolchain',
           'out_dir_arg',
-          'xcode_12a6163b',
+          'xcode_12a8179i_audio',
         ],
         'test_suites': {
           'isolated_scripts': 'ios14_beta_simulator_tests'
@@ -2160,7 +2160,7 @@
           'mac_10.15',
           'mac_toolchain',
           'out_dir_arg',
-          'xcode_12a6163b',
+          'xcode_12a8179i_audio',
         ],
         'test_suites': {
           'isolated_scripts': 'ios14_sdk_simulator_tests'