Limit test suppressions to D3D9 again.

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 0fed7ad2e4a1c19b3deb529b65012ad9bdf95ba4..e6351a630699af3ac4a207fff841274019ec3ca3 100644
--- a/content/test/gpu/gpu_tests/webgl_conformance_expectations.py
+++ b/content/test/gpu/gpu_tests/webgl_conformance_expectations.py
@@ -54,16 +54,15 @@ class WebGLConformanceExpectations(GpuTestExpectations):
         ['win', 'nvidia'], bug=459265)
 
     # Win / AMD failures
-    # TODO(jmadill): only fail on D3D9 with ANGLE bug ID 839
     self.Fail('conformance/textures/texparameter-test.html',
-        ['win', 'amd'], bug=454906)
+        ['win', 'amd', 'd3d9'], bug=839) # angle bug ID
 
     # Win / D3D9 failures
-    # TODO(jmadill): only fail on D3D9 with ANGLE bug ID 896
+    # Skipping these tests because they're causing assertion failures.
     self.Skip('conformance/extensions/oes-texture-float-with-canvas.html',
-        ['win'], bug=454906)
+        ['win', 'd3d9'], bug=896) # angle bug ID
     self.Skip('conformance/extensions/oes-texture-half-float-with-canvas.html',
-        ['win'], bug=454906)
+        ['win', 'd3d9'], bug=896) # angle bug ID
 
     # Mac / Intel failures
     # Radar 13499466