Adding crash utilities to chromecast/crash.

testing/buildbot/chromium.linux.json

 {
   "Android GN": {
     "additional_compile_targets": [
       "chrome_shell_apk",
       "mandoline:all"
     ]
   },
   "Android GN (dbg)": {
     "additional_compile_targets": [
       "chrome_shell_apk",
@@ skipping 29 matching lines @@
       {
         "test": "base_unittests"
       },
       {
         "test": "cacheinvalidation_unittests"
       },
       {
         "test": "cast_base_unittests"
       },
       {
+        "test": "cast_crash_unittests"
+      },
+      {
         "test": "cast_media_unittests"
       },
       {
         "test": "cast_shell_browser_test"
       },
       {
         "test": "content_unittests"
       },
       {
         "test": "crypto_unittests"
@@ skipping 1136 matching lines @@
       }
     ],
     "scripts": [
       {
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }
     ]
   }
 }