Add support for ASAN-specific test expectations to WebGL tests.

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

Index: content/test/gpu/gpu_tests/webgl_conformance_expectations.py
diff --git a/content/test/gpu/gpu_tests/webgl_conformance_expectations.py b/content/test/gpu/gpu_tests/webgl_conformance_expectations.py
index 95efe61cb506f850a4456d5d18eaf1b862411a45..8611cf254fc4bb1389fb6f463e63e858eb008002 100644
--- a/content/test/gpu/gpu_tests/webgl_conformance_expectations.py
+++ b/content/test/gpu/gpu_tests/webgl_conformance_expectations.py
@@ -8,10 +8,10 @@ from gpu_tests.gpu_test_expectations import GpuTestExpectations
 # See the GpuTestExpectations class for documentation.
 
 class WebGLConformanceExpectations(GpuTestExpectations):
-  def __init__(self, conformance_path, url_prefixes=None):
+  def __init__(self, conformance_path, url_prefixes=None, is_asan=False):
     self.conformance_path = conformance_path
     super(WebGLConformanceExpectations, self).__init__(
-      url_prefixes=url_prefixes)
+      url_prefixes=url_prefixes, is_asan=is_asan)
 
   def Fail(self, pattern, condition=None, bug=None):
     self.CheckPatternIsValid(pattern)