chromium_tests: apply chromium.get_env() when running tests

scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json b/scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json
index ce9dde3ed70ee4951fb849d0d875ac3ff273ad64..d21b4f0b5cb3da8b5dfec8388b81026836949cf0 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_gpu_Mac_10_10_Debug__Intel_.json
@@ -293,6 +293,9 @@
       "--output-json",
       "/path/to/tmp/json"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
     "name": "find isolated tests",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -366,6 +369,9 @@
       "--",
       "--test-launcher-summary-output=${ISOLATED_OUTDIR}/output.json"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
     "name": "[trigger] browser_tests on Mac-10.9",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -406,6 +412,9 @@
       "1",
       "browser_tests/Mac-10.9/ffffffffff/Mac 10.10 Debug (Intel)/571"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
     "name": "browser_tests on Mac-10.9",
     "~followup_annotations": [
       "@@@STEP_LINK@shard #0 isolated out@blah@@@"
@@ -431,6 +440,9 @@
       "--chrome-revision",
       "170242"
     ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
     "name": "Upload to test-results [browser_tests on Mac-10.9]"
   },
   {