chromium_tests: apply chromium.get_env() when running tests

scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json b/scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json
index 69f043ecba3c2ecc0a2373fac52884e07512aa1e..4f4dad4cebc2ce593145d6c080168983107a62f4 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json
@@ -302,6 +302,9 @@
       "--output-json",
       "/path/to/tmp/json"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "find isolated tests",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -375,6 +378,9 @@
       "--",
       "--test-launcher-summary-output=${ISOLATED_OUTDIR}/output.json"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "[trigger] browser_tests on Windows-10-10586",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -406,6 +412,9 @@
       "--write-full-results-to",
       "/path/to/tmp/json"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "test_installer"
   },
   {
@@ -432,6 +441,9 @@
       "1",
       "browser_tests/Windows-10-10586/ffffffffff/Win10 Tests x64/571"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "browser_tests on Windows-10-10586",
     "~followup_annotations": [
       "@@@STEP_LINK@shard #0 isolated out@blah@@@"
@@ -457,6 +469,9 @@
       "--chrome-revision",
       "170242"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "Upload to test-results [browser_tests on Windows-10-10586]"
   },
   {
@@ -467,6 +482,9 @@
       "--target",
       "Release_x64"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
     "name": "process_dumps"
   },
   {