Adding logic to restart the browser if there is an exception

content/test/gpu/gpu_tests/gpu_integration_test.py

Index: content/test/gpu/gpu_tests/gpu_integration_test.py
diff --git a/content/test/gpu/gpu_tests/gpu_integration_test.py b/content/test/gpu/gpu_tests/gpu_integration_test.py
index 21a283be021fd1b200f1974ed6ae2319de4bd986..811df39d77946fd262d9cddba0501fbd963f25fc 100644
--- a/content/test/gpu/gpu_tests/gpu_integration_test.py
+++ b/content/test/gpu/gpu_tests/gpu_integration_test.py
@@ -126,4 +126,11 @@ class GpuIntegrationTest(
     raise NotImplementedError
 
   def setUp(self):
-    self.tab = self.browser.tabs[0]
+    try:
+      self.tab = self.browser.tabs[0]
+    except Exception:
+      # restart the browser to make sure a failure in a test doesn't
+      # propagate to the next test iteration.
+      logging.exception("Failure during browser startup")
+      self._RestartBrowser('failure in setup')
+      raise