Supress failures in the new framebuffer filter srgb WebGL 2 test on Linux.

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

Index: content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
diff --git a/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py b/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
index ef27280601dc5e7cb51fbb95d0af16558f3e4a95..f064008411b7f90e9ac59a4a40a43b98215ea2d9 100644
--- a/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
+++ b/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
@@ -462,6 +462,8 @@ class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
         ['linux', 'amd', 'intel'], bug=483282)
     self.Fail('deqp/data/gles3/shaders/linkage.html',
         ['linux', 'amd', 'intel'], bug=483282)
+    self.Fail('conformance2/rendering/blitframebuffer-filter-srgb.html',
+        ['linux', 'amd', 'intel'], bug=634525)
 
     # Linux with ANGLE only
     self.Fail('conformance2/textures/misc/tex-unpack-params.html',