Mark test pass on Chrome 55

pkg/dev_compiler/test/browser/language_tests.js

Index: pkg/dev_compiler/test/browser/language_tests.js
diff --git a/pkg/dev_compiler/test/browser/language_tests.js b/pkg/dev_compiler/test/browser/language_tests.js
index c5806098e943838261ac20ec886732b5c3acf424..b0b2378d5a6b308f6b6dc1dacfdd7ba3d8e13e9b 100644
--- a/pkg/dev_compiler/test/browser/language_tests.js
+++ b/pkg/dev_compiler/test/browser/language_tests.js
@@ -423,7 +423,7 @@ define(['dart_sdk', 'async_helper', 'expect', 'unittest', 'is', 'require'],
     'lib/html': {
       'async_spawnuri_test': async_unittest,
       'async_test': async_unittest,
-      'audiocontext_test': is.chrome('<=55') ? fail : pass, // was sdk#27578, needs triage
+      'audiocontext_test': is.chrome('<=54') ? fail : pass, // was sdk#27578, needs triage
       'blob_constructor_test': 'fail', // was sdk#27578, needs triage
       'canvas_test': ['unittest'],
       'canvasrenderingcontext2d_test': ['unittest'],