Fail WebGL tests if GPU process crashes.

Bug: 863221
Change-Id: Id2fe5975439c2d2cb5ee59c80f7c02a7fce3320d
Reviewed-on: https://chromium-review.googlesource.com/c/1318834Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: James Darpinian <jdarpinian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605835}

content/test/gpu/gpu_tests/webgl_conformance_integration_test.py

@@ -72,6 +72,7 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
 
   _webgl_version = None
   _is_asan = False
+  _crash_count = 0
 
   @classmethod
   def Name(cls):
@@ -189,13 +190,19 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
     getattr(self, test_name)(test_path, *args[1:])
 
   def _NavigateTo(self, test_path, harness_script):
+    self._crash_count = self.browser.GetSystemInfo().gpu \
+        .aux_attributes['process_crash_count']
     url = self.UrlOfStaticFilePath(test_path)
     self.tab.Navigate(url, script_to_evaluate_on_commit=harness_script)
 
   def _CheckTestCompletion(self):
     self.tab.action_runner.WaitForJavaScriptCondition(
         'webglTestHarness._finished', timeout=self._GetTestTimeout())
-    if not self._DidWebGLTestSucceed(self.tab):
+    if self._crash_count != self.browser.GetSystemInfo().gpu \
+        .aux_attributes['process_crash_count']:
+      self.fail('GPU process crashed during test.\n' +
+                self._WebGLTestMessages(self.tab))
+    elif not self._DidWebGLTestSucceed(self.tab):
       self.fail(self._WebGLTestMessages(self.tab))
 
   def _RunConformanceTest(self, test_path, *args):