PRESUBMIT.py: Add timeout to tests.

Interrupt tests after 3 min, so that failures can be
surfaced before the presubmit step gets interrupted
on the bot.

Change-Id: Ia0efebaac5a0c5072b974a4fbbcb14fe672017ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2098942
Reviewed-by: Anthony Polito <apolito@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

PRESUBMIT.py

@@ -10,6 +10,7 @@ details on the presubmit API built into depot_tools.
 
 import fnmatch
 import os
+import sys
 
 
 # CIPD ensure manifest for checking CIPD client itself.
@@ -24,6 +25,13 @@ $VerifiedPlatform linux-mips64 linux-mips64le linux-mipsle
 %s %s
 '''
 
+# Timeout for a test to be executed.
+TEST_TIMEOUT_S = 180  # 3m
+# Tests take longer on Windows.
+if sys.platform.startswith('win'):
+  TEST_TIMEOUT_S = 330  # 5m 30s
+
+
 
 def DepotToolsPylint(input_api, output_api):
   """Gather all the pylint logic into one place to make it self-contained."""
@@ -57,6 +65,8 @@ def DepotToolsPylint(input_api, output_api):
 
 
 def CommonChecks(input_api, output_api, tests_to_black_list, run_on_python3):
+  input_api.SetTimeout(TEST_TIMEOUT_S)
+
   results = []
   results.extend(input_api.canned_checks.CheckOwners(input_api, output_api))
   results.extend(input_api.canned_checks.CheckOwnersFormat(