android: use common known_devices_file path from chromium_android

scripts/slave/recipes/android/perf.expected/missing_device.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.perf",
       "--builder",
       "Android Nexus5 Perf (1)",
@@ skipping 461 matching lines @@
       "--release",
       "--verbose",
       "--steps",
       "{\"steps\": {\"blink_perf.all.exact\": {\"cmd\": \"/usr/bin/python /path/to/run_benchmark --a=1 -v --b=2\", \"device_affinity\": 1, \"perf_dashboard_id\": \"blink_perf.all\"}, \"blink_perf.all.release\": {\"cmd\": \"/usr/bin/python /path/to/run_benchmark --a=1 -v --b=2\", \"device_affinity\": 0, \"perf_dashboard_id\": \"blink_perf.all\"}, \"blink_perf.dom\": {\"cmd\": \"/path/to/run_benchmark -v --upload-results blink_perf.dom\", \"device_affinity\": 1, \"perf_dashboard_id\": \"blink_perf.dom\"}}, \"version\": 2}",
       "--blacklist-file",
       "[SLAVE_BUILD]/src/out/bad_devices.json",
       "--collect-chartjson-data",
       "--max-battery-temp",
       "350",
       "--known-devices-file",
-      "[BUILD]/site_config/.known_devices",
+      "[HOME]/.android/known_devices.json",
       "--adb-path",
       "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools/adb"
     ],
     "cwd": "[SLAVE_BUILD]/src",
     "env": {
       "CHROMIUM_OUTPUT_DIR": "[SLAVE_BUILD]/src/out/Release",
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },
     "name": "Sharded Perf Tests"
@@ skipping 232 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.remove(report)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "reason": "sharded perf tests failed [InfraFailure(\"Infra Failure: Step('perf_test.foo') returned 87\",)]",
     "status_code": 1
   }
 ]