Fixing ToTMac to xcode 11a1027

Infra failures for 10b61 (Xcode 10.1 GM) due to MobileDeviceDevelopment.pkg untrusted. Upgrading XCode to 11.1 GM and fixing dimensions to Mac-10.14.

Bug: 1019931
Change-Id: I7507da8965146dfe5a66c012deac9dd36c8cda52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1894261Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Jeff Yoon <jeffyoon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711461}

infra/config/buckets/ci.star

@@ -670,10 +670,10 @@ def clang_mac_builder(*, name, cores=24, **kwargs):
   return clang_builder(
       name = name,
       cores = cores,
-      os = os.MAC_ANY,
+      os = os.MAC_10_14,
       ssd = True,
       properties = {
-          'xcode_build_version': '10b61',
+          'xcode_build_version': '11a1027',
       },
       **kwargs
   )

infra/config/generated/cr-buildbucket.cfg

@@ -5259,7 +5259,7 @@ buckets: <
       dimensions: "builderless:1"
       dimensions: "cores:24"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Mac"
+      dimensions: "os:Mac-10.14"
       dimensions: "ssd:1"
       recipe: <
         name: "chromium"
@@ -5268,7 +5268,7 @@ buckets: <
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"chromium.clang\""
         properties_j: "perf_dashboard_machine_group:\"ChromiumClang\""
-        properties_j: "xcode_build_version:\"10b61\""
+        properties_j: "xcode_build_version:\"11a1027\""
       >
       execution_timeout_secs: 43200
       build_numbers: YES
@@ -5281,7 +5281,7 @@ buckets: <
       dimensions: "builderless:1"
       dimensions: "cores:24"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Mac"
+      dimensions: "os:Mac-10.14"
       dimensions: "ssd:1"
       recipe: <
         name: "chromium"
@@ -5290,7 +5290,7 @@ buckets: <
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"chromium.clang\""
         properties_j: "perf_dashboard_machine_group:\"ChromiumClang\""
-        properties_j: "xcode_build_version:\"10b61\""
+        properties_j: "xcode_build_version:\"11a1027\""
       >
       execution_timeout_secs: 43200
       build_numbers: YES
@@ -5303,7 +5303,7 @@ buckets: <
       dimensions: "builderless:1"
       dimensions: "cores:24"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Mac"
+      dimensions: "os:Mac-10.14"
       dimensions: "ssd:1"
       recipe: <
         name: "chromium"
@@ -5312,7 +5312,7 @@ buckets: <
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"chromium.clang\""
         properties_j: "perf_dashboard_machine_group:\"ChromiumClang\""
-        properties_j: "xcode_build_version:\"10b61\""
+        properties_j: "xcode_build_version:\"11a1027\""
       >
       execution_timeout_secs: 43200
       build_numbers: YES
@@ -5325,7 +5325,7 @@ buckets: <
       dimensions: "builderless:1"
       dimensions: "cores:24"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Mac"
+      dimensions: "os:Mac-10.14"
       dimensions: "ssd:1"
       recipe: <
         name: "chromium_clang_coverage_tot"
@@ -5334,7 +5334,7 @@ buckets: <
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"chromium.clang\""
         properties_j: "perf_dashboard_machine_group:\"ChromiumClang\""
-        properties_j: "xcode_build_version:\"10b61\""
+        properties_j: "xcode_build_version:\"11a1027\""
       >
       execution_timeout_secs: 43200
       build_numbers: YES

infra/config/lib/builders.star

@@ -44,6 +44,7 @@ os = struct(
 
     MAC_10_12 = 'Mac-10.12',
     MAC_10_13 = 'Mac-10.13',
+    MAC_10_14 = 'Mac-10.14',
     MAC_DEFAULT = 'Mac-10.13',
     MAC_ANY = 'Mac',