tryserver.chromium.linux: convert chromium_trybot builders to remote_run

scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py

Index: scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py b/scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py
index 8e57c28e06c840b7e3d0d80e5fbf2da741d2e7ae..b9ec8de44b35799309b4764d23532cc76bdc3e94 100644
--- a/scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py
+++ b/scripts/slave/recipe_modules/chromium_tests/chromium_chromiumos.py
@@ -85,6 +85,7 @@ SPEC = {
       },
       'enable_swarming': True,
       'use_isolate': True,
+      'checkout_dir': 'linux_chromeos',
     },
     'Linux ChromiumOS Tests (1)': {
       'chromium_config': 'chromium',
@@ -120,6 +121,7 @@ SPEC = {
         steps.generate_isolated_script,
       ],
       'enable_swarming': True,
+      'checkout_dir': 'linux_chromium_gn_chromeos',
       'testing': {
         'platform': 'linux',
       },
@@ -142,6 +144,7 @@ SPEC = {
       },
       'enable_swarming': True,
       'use_isolate': True,
+      'checkout_dir': 'linux_chromeos',
     },
     'Linux ChromiumOS Ozone Tests (1)': {
       'chromium_config': 'chromium',
@@ -181,6 +184,7 @@ SPEC = {
       },
       'enable_swarming': True,
       'use_isolate': True,
+      'checkout_dir': 'linux_chromeos',
     },
     'Linux ChromiumOS Tests (dbg)(1)': {
       'chromium_config': 'chromium',
@@ -216,6 +220,7 @@ SPEC = {
         steps.generate_isolated_script,
       ],
       'enable_swarming': True,
+      'checkout_dir': 'linux_chromium_gn_chromeos',
       'testing': {
         'platform': 'linux',
       },