Flip remaining GN bots to use MB.

scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json

Index: scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json
diff --git a/scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json b/scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json
index 40f1bff05d85c397114177fd851a519fb270775e..89446c97ef460ddcb91beb1f180f7e56ecaf5a7d 100644
--- a/scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json
+++ b/scripts/slave/recipes/chromium_gn.expected/full_client_v8_V8_Linux_GN.json
@@ -75,13 +75,39 @@
     "cmd": [
       "python",
       "-u",
-      "[DEPOT_TOOLS]/gn.py",
-      "--root=[SLAVE_BUILD]/src",
+      "[SLAVE_BUILD]/src/tools/mb/mb.py",
       "gen",
-      "//out/Release",
-      "--args=is_debug=false target_cpu=\"x64\" use_goma=true goma_dir=\"[BUILD]/goma\""
+      "-v",
+      "-m",
+      "client.v8",
+      "-b",
+      "V8 Linux GN",
+      "--goma-dir",
+      "[BUILD]/goma",
+      "//out/Release"
     ],
-    "name": "gn"
+    "name": "mb gen"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "[SLAVE_BUILD]/src/testing/buildbot/client.v8.json",
+      "/path/to/tmp/json"
+    ],
+    "name": "read test spec",
+    "~followup_annotations": [
+      "@@@STEP_TEXT@path: [SLAVE_BUILD]/src/testing/buildbot/client.v8.json@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"V8 Linux GN\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"gtest_tests\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"base_unittests\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    ]@@@",
+      "@@@STEP_LOG_LINE@json.output@  }@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
   },
   {
     "cmd": [
@@ -99,6 +125,7 @@
       "--goma-dir",
       "[BUILD]/goma",
       "--",
+      "base_unittests",
       "all"
     ],
     "name": "compile"
@@ -113,24 +140,5 @@
       "//out/Release"
     ],
     "name": "gn check"
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "[BUILD]/scripts/slave/runtest.py",
-      "--target",
-      "Release",
-      "--no-xvfb",
-      "--factory-properties",
-      "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"buildername\": \"V8 Linux GN\", \"buildnumber\": 571, \"mastername\": \"client.v8\", \"recipe\": \"chromium_gn\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
-      "--build-properties",
-      "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"buildername\": \"V8 Linux GN\", \"buildnumber\": 571, \"mastername\": \"client.v8\", \"recipe\": \"chromium_gn\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
-      "--builder-name=V8 Linux GN",
-      "--slave-name=TestSlavename",
-      "--build-number=571",
-      "gn_unittests"
-    ],
-    "name": "gn_unittests"
   }
 ]