Don't always run the script tests if there are no compile targets.

scripts/slave/recipes/chromium_trybot_legacy.py

Index: scripts/slave/recipes/chromium_trybot_legacy.py
diff --git a/scripts/slave/recipes/chromium_trybot_legacy.py b/scripts/slave/recipes/chromium_trybot_legacy.py
index fb4c5feb19aae48003f7a58eedaec981991d72f0..34180c9d1d9f15c2d802c491b6f4154144803e43 100644
--- a/scripts/slave/recipes/chromium_trybot_legacy.py
+++ b/scripts/slave/recipes/chromium_trybot_legacy.py
@@ -439,7 +439,6 @@ def _GenStepsInternal(api):
     # See if the patch needs to compile on the current platform.
     # Don't run analyze for other projects, such as blink, as there aren't that
     # many try jobs for them.
-    requires_compile = True
     if (isinstance(test_spec, dict) and
         api.properties.get('patch_project') == 'chromium'):
       analyze_config_file = bot_config['testing'].get('analyze_config_file',
@@ -451,6 +450,9 @@ def _GenStepsInternal(api):
               compile_targets,
               analyze_config_file)
 
+      if not requires_compile:
+        return [], bot_update_step
+
       gtest_tests = filter_tests(gtest_tests, matching_exes)
 
     tests = []
@@ -465,13 +467,6 @@ def _GenStepsInternal(api):
     if api.platform.is_win:
       tests.append(api.chromium.steps.MiniInstallerTest())
 
-    if not requires_compile:
-      # Even though the patch doesn't require compile, we'd still like to
-      # run tests not depending on compiled targets (that's obviously not
-      # covered by the "analyze" step).
-      tests = [t for t in tests if not t.compile_targets(api)]
-      return tests, bot_update_step
-
     has_swarming_tests = any(t.uses_swarming for t in tests)
 
     # Swarming uses Isolate to transfer files to swarming bots.