Update from https://crrev.com/333737

testing/buildbot/chromium.linux.json

Index: testing/buildbot/chromium.linux.json
diff --git a/testing/buildbot/chromium.linux.json b/testing/buildbot/chromium.linux.json
index c18aece41b8a1b9f3f75f45c1487b5312fdc59e3..a0d832f16b674043ff24564c09919e2e20b1345d 100644
--- a/testing/buildbot/chromium.linux.json
+++ b/testing/buildbot/chromium.linux.json
@@ -35,6 +35,64 @@
       }
     ]
   },
+  "Cast Linux": {
+    "gtest_tests": [
+      {
+        "test": "base_unittests"
+      },
+      {
+        "test": "cacheinvalidation_unittests"
+      },
+      {
+        "test": "cast_base_unittests"
+      },
+      {
+        "test": "cast_media_unittests"
+      },
+      {
+        "test": "cast_shell_browser_test"
+      },
+      {
+        "test": "content_unittests"
+      },
+      {
+        "test": "crypto_unittests"
+      },
+      {
+        "test": "gpu_unittests"
+      },
+      {
+        "test": "ipc_tests"
+      },
+      {
+        "test": "jingle_unittests"
+      },
+      {
+        "test": "media_unittests"
+      },
+      {
+        "test": "midi_unittests"
+      },
+      {
+        "test": "net_unittests"
+      },
+      {
+        "test": "sandbox_linux_unittests"
+      },
+      {
+        "test": "sql_unittests"
+      },
+      {
+        "test": "sync_unit_tests"
+      },
+      {
+        "test": "ui_base_unittests"
+      },
+      {
+        "test": "url_unittests"
+      }
+    ]
+  },
   "Linux Clang (dbg)": {
     "gtest_tests": [
       {
@@ -306,6 +364,23 @@
       {
         "test": "wm_unittests"
       }
+    ],
+    "scripts": [
+      {
+        "name": "gn_check",
+        "script": "gn_check.py"
+      },
+      {
+        "args": [
+          "chrome"
+        ],
+        "name": "gyp_flag_compare",
+        "script": "gyp_flag_compare.py"
+      },
+      {
+        "name": "mojo_apptest",
+        "script": "mojo_apptest.py"
+      }
     ]
   },
   "Linux GN (dbg)": {
@@ -356,11 +431,6 @@
       "url_unittests",
       "views_unittests",
       "wm_unittests"
-    ],
-    "gtest_tests": [
-      {
-        "test": "base_unittests"
-      }
     ]
   },
   "Linux GN Clobber": {