Temporarily disables html_viewer tests

mojo/tools/data/apptests

Index: mojo/tools/data/apptests
diff --git a/mojo/tools/data/apptests b/mojo/tools/data/apptests
index bf094d7c45a77cc127b03b26e21f0e117f2f17e8..0ddb75363fc036143d1e6ed514e527f2a791793b 100644
--- a/mojo/tools/data/apptests
+++ b/mojo/tools/data/apptests
@@ -56,23 +56,24 @@ if config.target_os != config.OS_ANDROID:
       'test': 'mojo:filesystem_apptests',
       'type': 'gtest_isolated',
     },
-    {
-      'test': 'mojo:html_viewer_apptests',
-      'name': 'mojo:html_viewer_apptests',
-      'type': 'gtest_isolated',
-      'args': ['--enable-html-viewer-test-interface',
-               '--use-x11-test-config',
-               '--override-use-gl-with-osmesa-for-tests']
-    },
-    {
-      'test': 'mojo:html_viewer_apptests',
-      'name': 'mojo:html_viewer_apptests new frame',
-      'type': 'gtest_isolated',
-      'args': ['--oopif-always-create-new-frame-tree',
-               '--enable-html-viewer-test-interface',
-               '--use-x11-test-config',
-               '--override-use-gl-with-osmesa-for-tests']
-    },
+# TODO(sky): reenable once 531120 is fixed.
+#    {
+#      'test': 'mojo:html_viewer_apptests',
+#      'name': 'mojo:html_viewer_apptests',
+#      'type': 'gtest_isolated',
+#      'args': ['--enable-html-viewer-test-interface',
+#               '--use-x11-test-config',
+#               '--override-use-gl-with-osmesa-for-tests']
+#    },
+#    {
+#      'test': 'mojo:html_viewer_apptests',
+#      'name': 'mojo:html_viewer_apptests new frame',
+#      'type': 'gtest_isolated',
+#      'args': ['--oopif-always-create-new-frame-tree',
+#               '--enable-html-viewer-test-interface',
+#               '--use-x11-test-config',
+#               '--override-use-gl-with-osmesa-for-tests']
+#    },
     # TODO(ben): These tests are disabled pending mandoline:browser refactoring.
     #{
     #  'test': 'mojo:mandoline_browser_apptests',