Port Maps test to browser_test_runner harness.

content/test/gpu/gpu_tests/context_lost_integration_test.py

Index: content/test/gpu/gpu_tests/context_lost_integration_test.py
diff --git a/content/test/gpu/gpu_tests/context_lost_integration_test.py b/content/test/gpu/gpu_tests/context_lost_integration_test.py
index 5e9fa06f8161dcdcbbe817055eb8dd3dcf8cc167..c5c4950a6b7f480434f83055ad15f7c0e897e518 100644
--- a/content/test/gpu/gpu_tests/context_lost_integration_test.py
+++ b/content/test/gpu/gpu_tests/context_lost_integration_test.py
@@ -9,8 +9,8 @@ from gpu_tests import gpu_integration_test
 from gpu_tests import context_lost_expectations
 from gpu_tests import path_util
 
+import py_utils
 from telemetry.core import exceptions
-from telemetry.core import util
 
 data_path = os.path.join(
     path_util.GetChromiumSrcDir(), 'content', 'test', 'data', 'gpu')
@@ -106,7 +106,7 @@ class ContextLostIntegrationTest(gpu_integration_test.GpuIntegrationTest):
 
   def _WaitForPageToFinish(self, tab):
     try:
-      util.WaitFor(lambda: tab.EvaluateJavaScript(
+      py_utils.WaitFor(lambda: tab.EvaluateJavaScript(
         'window.domAutomationController._finished'), wait_timeout)
       return True
     except exceptions.TimeoutException:
@@ -128,7 +128,7 @@ class ContextLostIntegrationTest(gpu_integration_test.GpuIntegrationTest):
       # If we're running the GPU process crash test, we need the test
       # to have fully reset before crashing the GPU process.
       if check_crash_count:
-        util.WaitFor(lambda: tab.EvaluateJavaScript(
+        py_utils.WaitFor(lambda: tab.EvaluateJavaScript(
           'window.domAutomationController._finished'), wait_timeout)
 
       # Crash the GPU process.